I'm in the process of redoing the sound system in my 13'x18' living room/home theater. I've decided on the CSiA4 as the center with the voice-matched RTiA1's as the left and right speakers. Unfortunately, the rear of the room has a fireplace and two windows and just does not have enough room for any of the voice matched RTi series surround speaker. Speakers that I could hang on the wall would be the best fit for the room. So, with that said and knowing that the following speakers aren't voice matched to the RTi series, would Monitor 30's, RM-8's or the RM-101 or 201's provide me with a decent surround sound? Among other things, I know that voice-matching is important for the center and front speakers, but don't know how important or critical it is for the rear ones.