I had an older Onkyo with Polks. It sounded really nice. They had a very mellow sound and overall, the clarity was as good as any other in the price range. I still have the setup in my bedroom being used as a stereo receiver. You can find some nice deals on Polks many different places. I bought mine from CC (yes, I know...). 2 fronts, 2 rear, center, and sub for under $700. Granted, this was five or so years ago. You should be able to find something similar nowdays though.
Matt
Posted on
Circuit City is running a deal this week on polk. Regularly $500 (including sub), this week $300 (incl sub). FYI, most people I've talked say low-end jbl's are better than low-end polks.