I think Dan's post is right-on.
I have M60's and a VP100. I DO listen to music in the matrixed (surround) mode. The VP100 is a nice, little speaker. But my next upgrade will be to either a VP160 or VP180. I don't really have the right room/equipment configuration to try a vertical center channel.
You know, we all make compromises all the time. The trick is to be happy with your choices. I'm "content" with the VP100 at the moment, because it fits absolutely seamlessly into my equipment bench that supports the TV. Right now, my aesthetic/sonic balance is way off to one side. Someday, I'll tilt that balance the other way.
If you want "The Best Sound" - or will look back at your choices and mourn not getting it - then you need to step up to a 160 or 180. If you are willing to sacrifice "a bit" of sonic power/clarity in the name of finances or aesthetics, I'm sure you'll be just delighted with the VP100 or VP150.
