I’ve trained and flew for 7 years on the Rival S. With proper training, it is in my opinion, the best all around wing. I am currently flying the Rival X and while it is a good flying wing it is nowhere as responsive as the S. Wish I still had my S that went with my old Revo. I’ve flown a few air creation wings too and they do make a great king posted wing – I don’t remember the name but it was a 13 meter wing – older but so easy to fly. Somewhere between the Rival S and Rival X. If you go with the Rival S – get transition training – it’s a must as it requires a different flying style or you’ll get yourself in trouble fast.