I will upgrade the polks to a 2.1 system once I sell them
I will buy these - Bose 161 or Infinity 2-Way Bookshelf Speakers (P152)
Please do not support bose and their crappy products....infinity is a way better sounding speaker than ANYTHING blose can do...I hate to see people throw their money away on useless crap like bose.......
I have to agree with Jamie. Bose isn't equated with good sound quality by anyone but their marketing department. Simply put their quality is extremely low for the price you pay. The best 2 speakers you can buy below 500 bucks are probably the Behringer 2030p Monitors. With a few mods they can be made to sound like hifi speakers according the Wmax. Search threads with his name and the speakers to get more information.
Aesthetics aren't great for those though. If you are aiming for the best sound get them. If you want a good looking pair of speakers I suggest you look at SVS sounds. They have nice finishes. Another option is the speaker company. Free both ways shipping.
KEF iQs are very nice too. Go for the 1s for music listening.
You can find many other suggestions by searching through the forum. There are no shortage of good options.
Bose sadly isn't one of them.
Going from PS3 to computer? we have a HTPC section check it out. Maybe you can add to it. It's a fairly new section here.