My friend has indefinately lent me a Polk Audio CS245 center speaker.

How does this match up with my M22 fronts?

Free matches up pretty darn well, if you ask me!

I used to own the cs245i before I got my 22's and 150. I didn't actually listen to the polk along with the m22's, but I do know how it sounded compared to vp150.

The polk sounded muddy, boxy, and compressed compared to the 150. My memory is a bit hazy, but I don't think the polk will be a good match with the m22's. It's definitely not as neautral and uncolored like the axioms. That's just my opinion, try it out and see for yourself, I could be wrong.