I would agree with real80sman.
If you really don't like the forward sound and you've tinkered with all you can in your room (it is evident that you've discovered swapping amps makes little difference), Axioms may not be the speaker choice for you. However, if you do want to try something different, the M50/M40/M3 are about the only different line you can get. The change is subtle though so if the present sound is really overwhelming, you may want to look completely elsewhere for main speakers.
There are many comparable brands out there for quality but you will be looking at a bit more cost compared to Axiom. Of the brands i've heard lately and really liked compared to my Axiom, i would suggest you look at Paradigm, Monitor Audio, Tannoy or even PSB.
