[Overdriven]

An airplane esc generally isn't as smooth as a car esc. The Hobbywing will be more controllable as it is programmed for car use. The reason you see more higher Kv motors out now is because the most popular conversions are buggies and truggies. Most of them are limited to 4s use in the classes they race in and 4s is cheaper for bashers too so higher Kv sells better. All else being equal (including top speed) a lower Kv with higher voltage will be more efficient than higher Kv and lower voltage. Motors like the 11xl needed to be lower Kv with higher voltage to pull around larger trucks like the LST.

The Losi mount has a 43mm diameter so it will take a Castle, Tekin or most any finned motor. But those fins don't contact the mount causing it to hold heat in, plus it's limited in its gearing. If you kept the Kv around 1500 you could run 6s (stock trans gearing) with the Losi mount, but 2200kv you would need to drop down to 4s to keep the speeds and temps in check. I wouldn't recommend the 11xl or similar 36mm motor in the Losi mount.