I agree with gmorgan said in the fist post, but I believe an uncut chopper will not be as fast as, a chopper cut to ET, or a real ET. I had Leading edge cut a Chopper II, he calls it an ET cut, and I have it up to 102-103. It runs as good as my real 28 ET, but spins a little faster for the equal speed.
Mazco RE 3 is a good prop, but I have not had one that was better than an ET, I imagine you could cut one to ET and it may be really good, but they are thin.
Hoss Triton is one that I would like to run, and some have had good results.