Had a well packaged, double boxed Orange Extra arrive today. Compared its general dimensions to a Skywing Edge, and MXS. I can confirm that it (Extra) is a totally different design. I actually have the MXS wings on the Edge fuselage since they fit with minimal work. There is no way that could happen with the Extra's bits, not even remotely similar in any dimension. Double anti-rotation pins per wing, and curved landing gear are also not found on Skywing kits.
Well, going to start with an Omega I have on hand, if balancing is an issue I'll order a Motorfly 2820-685.