RE: Raptor 50v2 Mods
Never flown a concept 30, but the 50 size raptor does hold a littel more steady than the raptor 30 does. (biger is always more stable). The controlls can be very touchy or quite soft depending on your settings, servo throw, head speed....
The OS 50 is great, the most trouble free power you can get for that bird IMO.