I FLEW A GP CAP232 WITH 46FX AND IT DIDNT PRODUCE ENOUGH POWER SO I PUT A 61FX AND NOW IT'S MUCH BETTER. PROP11X8 APC. I USED HITEC 422 SERVOS FOR ALL FLYING SURFACES. IF U THINK ON FS, THAN I RECOMMEND THE SURPASS 91 (A 70 IS NOT ENOUGH!)