Mark,
I was (before we moved) using M60's and a VP150 using M22's in the rear...It sounded great!
We have moved into our new house and so, the M60's and VP150 have a new set of rears (QS8's) and I have the M22's upstairs being used as mains for the upstairs (mainly son's) setup. I am sure we could move the VP150 upstairs with the M22's and if you want to bring the M3's over, we could set up a quick "approximation" of your room. I only have a sad little subwhimper upstairs but will help to approximate what it may sound like...
Give me a PM and we can try to set up a time if you'd care to try...
Regards,
Steve
(WhatFurrer)