Stick40,
Caps in the past have had a bad reputation to snap left or right if you used too much elevator. A friend at my field has a small GP Cap 580 with a YS63 4-stroke and it flies AWESOME without ant tendency to snap..

Personnaly I prefer the Extra 300. I just like the lines on the Extra over the Cap, but they are both excellent aeorbatic planes. Just my 2 cents worth. Good luck with whichever one you choose.
Fly safe and have fun!!


David