RE: Which VPP system is better?
Mugen
Thats the way I have my RimFire, It came all as one unit "Motor and V-Pitch" It work but you have to keep the setup very lite, the more the better. I have mine in the RC Universe Bipe and I can only stop nose down but can't go up nose down and thats with about 13 oz. So Im sure with 8-9 oz or less will go up.
P-51
Good choice. The quality of the parts look & feel better and fly smother.