I would agree with Davyo. I have had a Polk Surround 360 for a little over a month. I do like the sound, the way it fills the room, but it does not replace the sound of rear speakers. I also love the bass that comes out of the 360 in particular, I didn't order a sub-woofer, the guy at Polk said try it without one first the decide. I still may order one but the bass out of the sound bar sounds really good. I listened to the CT-100 in a store (not a good test, I know) but didn't think the volume was loud enough for my large room. The CT-500 looks very promising and I think I would seriously consider it over what I got, especially considering price.