The 2826/6 or 2212/6 2200 Kv motors are probably the most popular size of park jet motor around and they are available from all kinds of vendors around the internet. They are serious "workhorses" for park jets, being able to spin a wide variety of props on 3S or 4S batteries, as long as your prop doesn't require the motor to pull more than 34A consistently, you can find all kinds of different combinations that will work with this motor depending on the performance and flight experience you seek.
I know that it can be a bit confusing when reading the numbers, but I can tell you that 2826/6 and 2212/6 2200 Kv motors are the same. It depends on whether the vendor uses the outside measurements of the "can" or the measurements of the stator. When I say "can", I mean the part of the motor including the shaft then spins when the motor is working, shown in the picture on the left below. The stator stays stationary and is what the "can" spins around, hence why they are called brushless outrunners as these two parts don't touch and these motors can last a very long time. The stator is shown in the picture below on the right. The 2826 means the can is 28 mm in diameter and 26 mm long. The 2212 means the stator is 22 mm in diameter and 12 mm long. Essentially, all the "mild" motors on our recommended parts list are the same durability and performance wise, only difference being perhaps quality control and how the cooling holes are arranged on the top of the "can".
The Turnigy and RC Timer motors on our list come complete and ready to go with all connectors, the prop collets are of good quality, just need to put a prop on and you are ready to go. Depending on where you live, you can probably get the Turnigy motor a little quicker, the RC Timer and Gear Best motors take quite a bit longer if you select the cheapest or free shipping depending on what the vendor offers. Of course the Turnigy and RC Timer motors are a little more expensive at about $10 USD depending on where you get the Turnigy motor shipped from. The Gear Best motor is essentially a "no name" motor that I have also purchased and used from Ebay for as cheap as $5 USD.
The Gear Best or "no name" motors and the RC Timer FR2205 2550 Kv motor do not normally come with bullet connectors, so you will have to provide those, the prop collets are either not included or are sometimes not of good quality. Later in this post, you will find a link and other info about the RC Timer FR2205 motor as it has a couple of options for mounting the prop on the motor. If you decided to purchase a "no name" motor, I would suggest also purchasing a spare parts kit like this one from RC Timer, just in case. I guess this does bring the price up a little bit although most of us probably have some male bullet connectors around if we have purchased female connectors for our ESCs. It is a good idea to have spare 3.17 mm prop adapters for all these motors actually, they are made of a very soft aluminum and once bent are nearly impossible to straighten and can cause your prop to run out of true making it louder and less efficient. Shipping for any of the vendors of the "no name" motors I have purchased has been free, but taken on average 5 weeks to get to me on the west coast of Canada.
Bench test data
All the data shown here is collected using a Turnigy 2826/6 2200 Kv motor as it seems to be the most popular choice across the park jet community for this size motor. I have actually bench and field tested other props like the 7x3 EMP and 6x5 EMP, but didn't include them on our recommended parts list. However, if you go to our prop thread and search through that, you can find my thoughts on those props depending on what performance you might seek or what you have available to you. All the data shown is with the ESC timing set to low, either a 40A or 60A ESC and a battery that can easily deliver the amps required. Links to all the props tested below can be found on our recommended parts list.
50% throttle - 14.4A/168.0W producing 500 gr/17.6 oz of thrust;
100% throttle - 26.0A/280.9W producing 720 gr/25.4 oz of thrust.
50% throttle - 13.1A/156.3W producing 550 gr/19.4 oz of thrust;
100% throttle - 26.8A/317.4W producing 870 gr/30.7 oz of thrust.
RC Timer 6x3x3 carbon prop
50% throttle - 10.7A/127.3W producing 426 gr/15 oz of thrust;
100% throttle - 21.5A/245.8W producing 715 gr/25.2 oz of thrust.
Master Airscrew 6x4x3 prop
50% throttle - 13A/154.2W producing 470 gr/16.6 oz of thrust;
100% throttle - 26.9A/307.8W producing 884 gr/31.2 oz of thrust.
So how do these props perform at the field? I think for best all round performance, it is tough to beat either the 6x4 APC or the Master Airscrew 6x4x3 props. Personally, I am liking the MA 6x4x3 prop more and more on this motor, it is very stiff and provides very good linear acceleration and speed with almost no prop flex. If I couldn't use that, I would go with the 6x4 APC prop, but that is to suit my flying style where I like lots of "thrash and dash" (aerobatics and high speed runs :).
The 6x3 EMP does spool up faster and has the best acceleration of all the props tested, so if you want quick punch out, that is a good prop to choose, it has about the same top end speed as the 6x4 APC despite having better thrust numbers on the bench, I'm not sure that the blade shape is that efficient for top speed with this motor.
The RC Timer 6x3x3 carbon prop is very efficient with respect to amp draw, but does not produce a lot of speed or acceleration for some reason, perhaps the blade shape, I'm not sure. However, if you have a lighter plane and want something that will give you a lot more endurance, the RC Timer 6x3x3 prop might be a good choice.
As you can probably gather from the test numbers above, you could use a 30A ESC if you wanted to, personally I like to use a 40A ESC as it just gives me that extra bit of overhead and since the other power setups I like to use all need a 40A ESC, I don't have to have a bunch of different size/capacity ESCs around. A Turnigy Plush 30A ESC is 7 gr lighter than a 40A ESC, so if weight savings is really crucial to you, you could try that. What I have found with randomly testing a lot of these motors with my wattmeter at the field is that even within the Turnigy motors I have had some that will pull up to and slightly over 30A and still run really well, so if you go with a 30A ESC, I would monitor it's heat build up/dissipation. We like to keep it simple and just recommend a 40A ESC as it gives you lots of flexiblity with almost all 2212 size park jet motors, regardless of their Kv rating.
All the batteries on our recommended parts list will work just fine with these motors regardless of your prop choice unless you do decide to experiment with the 7x3 EMP which pulls 34A at full throttle.
A very versatile motor, sometimes just with a change in prop you get a whole new flight experience without having to spend a whole lot of money. The Master Airscrew 6x4x3 prop is a bit more expensive, by the time it is shipped to you it will probably cost at least as much as the motor, but in my experience it works really well.
Here are some videos of planes with this motor demonstrating a few of the props mentioned above. In the F-18 V3 video, I was actually experimenting with ESC timing based on something I had read. In all honesty, 99.99% of park jet motors of any size that I have tested work just great on low timing setting which is normally the factory default on most ESCs you buy. I also tested the 6x4 EMP prop in the F-18 V3, but found it to be a very inefficient prop for any park jet motor I tried.
This little motor does pack a serious punch for it's size and is a good choice if you are wanting to really lighten up a plane as it is 23 gr/0.8 oz lighter than the other motors in this category and in our other "mild" and "hot" categories.
As you will read in the above link, if you are thinking of using this motor, despite how the thrust numbers compare to the other motors in this category, it is important that your plane's AUW stay as light as possible, certainly no more than 22 oz/624 gr. Additionally, I would also recommend using this motor in planes with wingspans of 27"/685 mm or less. It would also be a very good idea to ensure a good sanding and finishing job is done on the plane you use with this motor.
My reasoning for these recommendations is based purely on flying with this motor in strong winds and it's physical size. With the stator being only 5 mm tall and the can only about 13 mm tall, it is half the size of the other motors in this category. This of course helps make it very light, but my experience is due to the small size of the stator and the fact that it has half the magnet surface area inside the can compared to 2212/2826 size motors, when really put under load, it does not quite have the "grunt" to overcome a lot of airplane weight and drag.
Otherwise, this motor works well with all the ESCs and batteries on our parts list, you can review the test data at the link above to select the prop that might work best for you. At the field, my experience was that this motor works best with either the 6x4 APC two blade or the Master Airscrew 6x4x3 props.
Update 24 Sep 2017 - The label on the FR2205 2550Kv is not well secured, the adhesive seems to be of inferior quality. As you can see in this picture, after only about six flights, the sticker started to come off in the air making one heck of a racket. Luckily, it did not enter the motor in any way which could have been very possible given the size of the cooling vents on this motor and would potentially led to a catastrophic result.