I'm currently flying one with a Norvel 40 and 12/4 apc. It weights 4lbs 10ozs and flys good. The Norvel will pull it out of a hover but not a rocket launch. It has a lot of pitch and roll coupling to rudder but nothing that can't be managed but still a neusance. There are about 5 of them flying at our field at the moment and all seem to be satisfied with them except for the covering. Lousy material.