As mentioned previously (I think), make sure that you can do instantaneous swithing and that they're level-matched exactly or the louder speaker will always sound better.

If you can't do that at home, I would probably just spend a few hours listening to a compiled CD selection (don't compress the files)on one set of speakers and then sit down with the same music on the other speakers. After awhile, swap back and forth every few minutes until you start determining where your preferences lie.

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