I was recently forced to retire my old PCI X-Fi XtremeMusic and now I'm in the market for a new card. Trying to decide between the X-Fi Titanium (non HD) and the Xonar D2X. From what I've read it seems both Creative and ASUS have driver issues with W7 X64 even though I personally never had any driver issues in the 5 or so years I've used my old X-Fi including over a year under W7 X64... in any case a major feature I need in my new card is good 3d positional audio for the sake of gaming. My old X-Fi's CMSS-3D was awesome and for that reason alone I was planning to simply pick up the Titanium and be done with it... but from what I've heard the ASUS cards seem to be all around better than the X-Fi's with the exception of EAX support and such. Now I doubt it that I'll notice any difference in sound quality between the Titanium and the D2X with my lowly HD555's so my main concern is how CMSS-3D compares to the Xonar card's Dolby Headphone 3D positional audio? And which of these 2 cards do you reckon would be the better choice with gaming being a primary focus but also quite abit of HD video viewing involved?