Granorense, the newest generation of high-end Creative Cards are fairly good. 2nd-newest generation isn't, there was even a class action suit about how creative deceived customers by claiming (24-bit support or something like that, i forget now).
The "best" sound card for music is one where you use UNresampled digital out. That makes this card as good or better than any creative card. You can't use analog out then run it to mere Logitec speakers and be thinking "best", it just doesn't work that way with audio, all parts in the chain must at least not alter sound (minimally that is).
The creative cards do have better front-channel analog out than the Chaintech's front out. Thus most people wanting 2 channel out analog with the chaintech use the superior rear output channels. IF you need more than 2.1 channels of output then a new higher-end Creative card is your best bet with those speakers. That is, best bet between the two cards, there ARE other cards better than either but they become more and more specialized, not a one-shoe-fits-all situation on some so you need to make up your own mind what's best in high-end cards.
Check out some reviews of cards and especially the forums at an audiophile oriented website(s) like
head-fi