2600 Kv rated motors? which one?

[Revracer]

okay well what should i get? im ordering this weekend. feigao, mega, or now the SV27 motor? and like ive said before, im only going to be using 3s lipo for right now. so a motor that will eb crazy strong and decent speeds (35-40) on 3s yet can handle a 4s once i get a set of batteries. the problem i see with the SV27 motor is it is only 1800 Kv. that wont spin very fast on a 3s lipo. but about the mega. so if it has as much torque as the 7xl, and higher kv. it will be as quick and faster? and can handle 4s power?