Just remember, it's not the bow, it's the shooter. I won many 3D events with my exact hunting setup. The only difference was the release.
Todays bows have speed, especially if your looking up a new Bowtech. Set the Bowtech up as your hunting setup, go out and shoot 3D with it. You'll do fine.
That being said, I totally agree with Matt / PA on this one too. Except his number one, that answer depends on which class you shoot in.