I am curious to see some suggestions as well. I recently purchased the P363's, and my center is my old Sony SS-CN495H. My biggest issue is speaker size.
The Sony fits in the little cubbyhole in the TV stand right underneath the center of the television, but said cubbyhole is only about 6 3/4" high. None of the Infinity center channel speakers will fit in there, and I would rather not have to mount a center speaker on the wall.
"I got Jackie Onassis in my pants..." - The Dictators