i would not go 30 size period. MOST people having a 30 will stop flying it when they get a bigger heli, or are not real happy when they keep on flying, so if you can afford it go with at least a 50 size. 30 size is just real wiggly, but let's not make this a flame war about 30/50/60/80/90 size helis, this thread is about my problems with the rappy 50, i will call ace today and i will post update results when available...