ALOHA
I have a very nice Home Theater setup in the living room. If I'm going to be watching movies or listening to music it will NOT be with the computer. Although I suppose my habits could change when I'm web browsing, but currently I just do not.
I have some old Creative Soundworks 4.1 speakers with a proprietery digital cable for a Soundblaster Live. I currently use them with my nforce2/soundstorm based Abit NF7-S 2.0. I grabbed some Logitech Z-640s open box at Best Buy for about $60 yesterday. They are 5.1. I can't say that I really notice much of a difference between them and my old 4.1 setup. It might be a little better. MIGHT. I'm thinking about returning these and taking advantage of the Megaworks 550 5.1 setup that's being sold (listed at the hotdeals site) for about $168 after rebate. These are highly rated speakers on Tomshardware.
My real question is, playing games, would I notice a difference with a nice 5.1 setup or are these setups for movies/DVDs? I do play state of the art games.