I was just curious if some of yous-guys out there have anything positive/negative to say about either Polk or Klipsch speakers? I am contemplating one of these brands to replace my current speaker setup. Right now, I have a sort-of mix-and-match 5.1 speaker setup with some low-end Pioneer and generic speakers and a 5 yr old Polk sub. Budget-wise, I want to buy good-sounding speakers, but of course, the less I spend, the better. I would say about $700 is the most that I can spare for the moment, at least until I win the lottery... Anyhoo, any help would be appreciated. Thanks so much!