ok, I want a build a 7.1 setup. I plan on using the Pioneer VSX-D811S reciever, unless anyone has negative comments about them? How do I know which speakers to get for the setup? I have to get 1 center, 6 side speakers, and a sub right? Is there any difference in the side speakers? Are the 6 speakers suppose to be 2 front, 2 mids, and 2 rears? Any recommendations on the speakers? My prefrence is crisp sounds. TIA.