I went to the Sandown Model Show yesterday and saw the Capiche 50 flying slot. It was excellent! I don't remember seeing one do a knife edge loop but all were torque rolling and doing things like knife edge harriers which looked very cool. The chap who designed it says that knife edge is definatly one of the Capiche's strong points and the rudder throw is huge! Don't see why it wouldn't knife edge loop with enough power and a good servo in the tail. As for the Su-do-koi I'm not sure but plenty on RCU will be able to!

Andy