If you want my suggestion since you're thinking of upgrading your speakers - btw I'm a long time Infinity fan. For a home theater that is mostly for movies, I would consider the Beta C360 center channel. If I recall correctly, the Alpha Center is the smaller center model to the Alpha 37c. I have the older Interlude 37c and can tell you that Infinity's CMMD drivers are very consistent when it comes to voice matching. I have this center with a set of 10+ year old Infinity RS5001 that had the ribbon EMit tweeters. Anyway before I go off on a tangent, the center really pulls it all together and the specs on the Beta C360 look like they'll have the bass to impress. I'm sure the larger Alpha, if you can still find it, will be a really nice addition as well. And, not only will it be perfectly voice matched, it will also be color matched as well. I just checked eBay and didn't see any right now. My point after all this, is that a beefier Infinity center will give you much more dramatic results for your hard earned dollars (I hate the phrase bang for the buck).