anybody used one of these? The feature here is the frame stays on. Its about twice the price of any other type body handler, but seems top notch.

http://www.whirlyjig.com/

We have one at my buddies shop where I work part time. It's a top notch piece and totally adjustable. It does take some time to setup and balance the first time. Once done, you can turn the body with one hand, stop it and the body will not turn on it's own...again, once balanced properly.