I'm just using an old Logitech Dual Action game pad. Looks like a PlayStation style controller. Used it for flying in Arma2. It worked well for me in Arma, but didn't think it would be of much use in TOH. Turns out, it's not bad. Collective control is so-so, and landings are sometimes ugly, but hovering and maneuvering about is pretty good. it's not "realistic" but for $10, can't go wrong!