I've never seen a full scale Yak 54 in competition either. Come to think of it, I've only seen one at an airshow at all, and it didnt fly, just static display. I think you are right about the Yak in R/C competition, though. You never saw one until QQ won with his. Now, everyone has to have one. Just like everything else I suppose. Sort of a "keep up woth the Jones's" type thing. Truth is, in all the competitions I have been to and watched, I've never seen a Yak do ANYTHING an Edge, Extra, Velox, or CAP 232 couldnt do with a competent pilot at the sticks. I must admit, though, the Yak is a great looking plane!

As far as the Edge not geting used in IMAC competition much... I'm just trying to get started flying IMAC, but from what I've read and heard from a few other pilots, it has to do with the straight leading edge of the wing. It's just a better 3D machine than it is an IMAC plane, as far as R/C flying goes. But, I have seen several of them in competition. I thought they flew the sequences pretty well... better than I could have flown them for sure!