That they do!
I have had several, my latest a Turmoil. It was scrapped after a few outings when I realized it was beyond hope. It flew like a pig, mainly because of how much it weighed (there's no way you'll ever get one to weigh what GP says they do) and the FO hinging system is a joke. I'm getting a new plane soon (Extra 300), a club member makes them. I flew one this weekend and it flies like a dream, it'll do anything I want it to. As far as the FO's, save your money.
Mike