So I now have my Mac Pro, and it's time to upgrade from my Logitech X-540s to a speaker set that goes S/PDIF through the digital audio ports (also, getting off using the firewave would be nice as well). I'd like to get a nice 5.1 surround system in the $200-$500 range for fairly accurate reproduction of music and movies and other such things (preferably THX certified); I could use surround monitoring for my video editing. I've been thinking about the Logitech Z-5500 but I keep hearing it's rather bassy and not necessarily the best to use for music and whatnot. Are there any recommendations? I'm not exactly so boned up on my sound technology, so I could use some help here. Additionally, if anybody knows of a stereo monitoring set in the $100-$300 range that has accurate reproduction, that would be helpful too. Thanks.