try his ipower series. The bearings go from what i hear, but he sells em too and there serviceable. T-motors do the same....... i really like suppo,,,,,, but i'm getting ready to test a new one coming to MR market soon....
if you have 4s, use 10" props and the 760kv,,,,,, you'd be pretty stoked. if you want 3s and 9-10" get 900 kv. 22mm are good to around 2 kilo, then get slugish, 28mm go to 2.5 kilo carry and start getting mushy