My own CAP was bought to use the 3.2 engine that I'd had on my Stinger. The stinger was really well behaved but couldn't do 3-d. No coupling, no wierd snaps. Well, it would snap out if I got the controls way crossed up during a hover. I had it balanced for neutral elevator upright and inverted. If I could just have solved the wing rock it would have been a great 3d plane too.

I'd read about the ideosyncracies the CAP has and figured I'd just take on each of them and work it out. However, when I found that the landing approach and flare limits where you can put the CG, I wasn't happy. I tried various thrust angles, etc to get the plane to behave on approach as well as in the air with no luck. It's very frustratinig to have a plane that will perform well in the air at a rear CG location, then you need to hold forward stick on approach for some reason. That's uncomfortable as well.

The snapping on mine was strange, in that it was like a micro-snap - it would steepen in a left turn or drop the left wing on final without going hard over, and I could correct with opposite aileron. Still not sure what was going on there.

Anyway, I think both the Extra and the Edge are designed with the thrust line, wing and stab close to the same line (like a Stinger) and without the weird stuff that the CAP does.