Polk RM6750 Q

If you're looking at the 6750's I'd check out outpost. You'll find them there a bit cheaper.

I'd choose them if you have space requirements for your speakers or have to satisfy the wife approval factor for aesthetics or want it all now and not willing to build over time. Personally, I'd rather find a front three as an anchor. The Mission M70 and matching center can be had for under $170. And you can find some decent subs (better than what comes with the 6750 setup) for $200 or under.

I'd say it helps to match. You'd want to stick with surrounds from the same model line or who's drivers share the same characteristics. The goal is to have a seamless match between the fronts and surrounds when sound migrates from front to back or back to front. That being said, my theater room has M&K's up front and Wharfedale bipole surrounds in the rear that I've had forever and just haven't felt the need to upgrade. Maybe I'm just not that critical of a listener. But if I was building from scratch (and I'm sure others here would agree), I'd match up the fronts and the rears.

sorry. I didn't see that you responded. guess I don't get my email notifications. The center is part of your front speakers. You should want your front three to match. Hope you made out ok.