To be honest most of them run the same.
I really doubt you'd notice +/- 100kv in any motor.
Buy a motor you like and go have fun!
Most of the differences are cosmetic. Things like connectors how you adjust the timing and general construction of motor.
Try to buy something you can change the stator in if you decide you need more motor down the road.
In general the more kv the lower you gear.
Hope that helps!