Well, I've got a Mejzlik 32X10 on my 40%, and it's great. It isn't as heavy as you'd think a carbon fiber should be, it's quiet, and it doesn't seem to flatten out or flex alot when you hit the power. I know it's not the same size, but I'm assuming the Mejzlik 20X10 is just as good. I've heard Bambula props are pretty good too although I don't have any experience with them.