the coincidents are great if you're an SET fan, otherwise i'd steer clear.
b/w the VR5s and the VSM-ms, i've heard both...and thought the VSMs were much better. your room is ideally sized...but i wonder about the liberties you'll have to place them. if you're limited w/ what you can do in placement, you may just want to save your $$ and get something mid-fi.
the speakers you're talking about are great speakers if you'll give them what they need...bad placement isn't what they need. if you can't place them properly, why not some standmount ACIs Jags or Sapphire 3s w/ a very small footprint?
rhyno