Neo-One vs Novak 4.5 vs ?

[SpEEdyBL]

I say all you need is a 5700 with 3s. It WILL go 70 mph if you gear up. You don't have to get a 4600 w/ 4s lipo to go that fast. In fact, you would have to use a separate BEC in order to use it.

Just for some clarification:

A 4000 kv motor on 3s is faster than a 7000 kv motor on 2s, and a 3000 kv motor on 4s is the fastest. The reason being that you gear higher with the high voltage, lower kv motors. Also, you really don't gain anything by using high voltage with a high kv motor.