I agree with John on this one.

If you're using these for 100% music and you're not into pipe organ music or rap/hip-hop, go with the M60s and forget the sub. The M60 will cover your music range fine.

If you go with a bookshelf....virtually ANY bookshelf out there, I think you'll just end up wanting a sub. And that' more $$ and, as you said, another box in the room.

::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::