huge difference - i got a £15 sound card once, it broke after 2 days but it was much better than the onboard...
why the D2X, though?
It is good, but unless you need DTS instead of DDL (if you don't know what they are, you don't), you might be just as well off with the DX
no not got a clue what the difference is but as i've already bought the d2x was wondering if i should keep it or flog it on.