I returned the Polk system. Their software for the wi-fi speaker network isn't working well. I had their soundbar and two wireless speakers that can all be used together for 5.1 dolby. But, adding them as surrounds took about 20 mins. Then, all hell breaks loose taking them out of the "speaker group" to use them separately. The sound from their S6 speakers was very nice in my bedroom though.

I ordered a Pioneer receiver and found a deal on a complete Bowers and Wilkins speaker group on Craig's. The pioneer is wi-fit too, and can add network speakers later.