neu motor question/ brakes

[magman]

I am looking for info on the neu motors...

1.I am converting my mbx-5 over to brushless and am interested in these motors.
2. are they worth the extra $
3. which one(s) would recommend....

I will be using a mm speed controller and 5000 4s li-po

4. will the motor have enough brake force or should I keep the mechanical brakes intact


thanks