I have Paradigm ASM150 hooked up as rear with my Harman Kardon 435. I chose inceiling speakers because it's hiddden and neat looks. Sound great in both movie and music. No distortion. Very happy with it. I heard the Polks from Fry's, Tweeters and thought it was ok but somewhat wasn't very impressed.
Funny, I reread your post and it's almost like mine a few month back asking ppl about in-ceiling speakers for my too new home.
Q: PM me where can you get it for $250, I paid mine $350 plus tax.