From the research/feedback I've gotten...
I think i can [fairly] safely conclude that if you're interested in the
BEST DVD movie experience on a PC...then the Acoustic Edge is #1. The Acoustic Edge also leads in the music area, with it's ability to expand sound into all 6 channels (not just copying from front to back...it supposedly actually sounds half-3D

) Gaming performance is good...it has great positioning in front/back...but along the sides and up/down, it lags behind SB Live and Santa Cruz.
The Santa Cruz is the
BEST for gaming. It has awesome 3D positioning, and pretty good reverb effects (though the tweaking is somewhat lacking). It's pretty good for music--not far behind the Acoustic Edge. However, it doesnt sport the full ability to re-map regular noise to 3D. And for DVDs, Acoustic Edge reigns supreme, though the SC isn't bad.
Note: this could all change when the Audigy cards come out...
edit: with ur speakers...I might just wait until the Audigy cards come out...Creative card w/creative speakers...should work optimally-ish imo