rdwarn, don't go away mad, or go away at all. We're nice.
The receiver issue is huge. Like Snippy said, what you're driving the speakers with could be an issue, not only from the Bose proprietary perspective, but also regarding center channel functionality. For instance, if you've got a modern, Dolby Digital receiver, you will almost certainly be able to run a phantom center channel with the M60's. Depending upon your room and tastes, you might find that option much more satisfying than using the Bose in the middle.
I don't have a good understanding of how the Bose system works; are the cubes powered by or crossed-over by the sub or something? Or can you just wire them up to standard outputs like regular speakers?
I love my Axioms. You'll be absolutely delighted with the difference you hear compared to the Bose.
