I listened to some def techs before buying axioms and I would say that the bottom end was "muddy" and boomy, and nowhere near the clarity of my axioms. I don't remember anything else about them really.

I would go with a pair of m80s.. you cant go wrong! I would also pick denon over pioneer personally.

I am very happy with my denon 3808 and epic 80-500. Do it, you'll never look back!

-David