First off, I wish to thank the helpful members on this forum who helped me a little over a week ago to diagnose the problem with a non-functioning LS90 I rescued from a thrift store..actually a matching set of ls90's plus the cs350ls center speaker. I ordered all new drivers from Polk and they arrived in 2 days.. literally! 30 minutes for a careful install and then... music!
First impression was that these speakers deserve their reputation,,they are that good! Second, the MW7010 drivers that are being used as replacements for the original MW7100s seem sonically identical to me not to mention more robust in their construction. Music doesn't seem colored at all to me through these speakers but I've noticed that especially good live recordings seem literally to ring. Deep base does seem to blend more than midrange or high but hey..I'm delighted by things than can get below 50 hz! All in all, I'm inventing excuses to listen to music again and that is not only my goal but my highest praise.
As for the CS350..? That thing is a joy! I never knew center speakers could add much to music but they can..they really can! Thanks again guys!