I got the Esky 3800kv, there were some others I was looking at but didn't have time to check the specks, There isn't much room there so any motor will have to be about the same diameter as the one in it. I got a hobby wing 30A ESC because I have a programming card for them. The little rate gyro on it seems to work fine for my flying style. I have an Align RCE500X head holding coming in for my mini titan so I be able to make a comparison soon.