I have a skybolt and am building an ultimate fun fly. (I too like 2 wings) I LOVE flying the skybolt. It's a sweet plane and will do most "normal" manuevers beautifully. It's not an all out aerobatic bipe, which is why I'm building the ultimate. It promises to be pretty exceptional. The ultimate fun fly has been A LOT easier to build than the Skybolt. Profile fuse and strip ailerons, etc. I guess it just depends on how much building you want to do and what kind of flying you want to do when you're finished. Heck, build them both like me!!!