Mike, I will have to disagree that helis are more difficult than quads. Traditionally yes, but now that is not true. Most helis now are flybarless and have a flybarless fc that gives just as much correction and stabilization as quads have. Traditional helis had to have very precise mechanical setup and the heads were complex. The only "stabilization" was the tail gyro. Now the heads are simple, far less mechanical setup and have full stabilization from the flybarless fc.