What about Polk audio - IHT 6000? I heard the 4000 model in-store vs. sony CT550. No discernible difference imo and they were side by side. The sony treble wasnt as good as the Polk (sony still had a bit of the annoying panny hollow sound) though the Polk doesnt have as many functions for it's higher price range which is a waste (less hdmi ports, less remote functions). Reading customer reviews, a common problem they said Polk doesnt last long with sub-woofer dying out quite often. That sucks. They say the 6000 is much better.