well the 4.1's won't do you any good for movies unless they have good hardware emulating capabilities (which they don't...i used to have the promedia 4.1's). you need 5.1 speakers to watch movies/DVDs in true dolby digital surround sound. and you don't play games, so you'll never need the 4 speaker setup for EAX gaming. on the other hand, like you said, they can be found for only $30 more than the 2.1's, and if you love music, you can listen to it in stereo x2 by turning up the surround sound dial on the satellite control unit. it all boils down to whether the extra $30 is worth it to you. personally i love listening to music on my computer, so i'm in the process of getting a nice system w/ a receiver and hooking it up to my computer...that's why i got rid of the promedia's. but if you aren't that much of an audiophile, then klipsch makes one of the best computer speakers out there.