ORIGINAL: RCKe
It depends on what your application is. Both Minn and I prefer to use Graupner props, but the are a little bit harder to get ahold of since Tower, Horizon, and most LHS's don't carry them, they have to usually be special ordered.
I've always wanted to try a Graupner prop after hearing good things about them. Where are you finding them? Is just Hobby Lobby selling them?
As for wood props, I've found that they aren't necessarily all created equal. The J-Zingers just seem to perform better to me. One of these days I will get around to trying some of the Vess, Xoar and other props out there too.