I have an Axiom HT setup (M3Ti's, QS8's, VP150) and am very happy with it. I am debating going to 6.1/7.1 and some alternatives would be:

o put a VP100 in back for a single rear center.
o put a pair of Mzero's in back.

I realize these have different tweeters than my current speakers. However, they should be close and the rears should do pretty light duty. Any comments on which is preferable (extra amp channels are plentiful at my house right now ;-) I am leary of moving up the axiom line due to size constraints.

acg.