I've used about 4 or 5 CL (Creative Labs) sound cards (upgraded about every two years), last one I used was the CL Titanium (non HD).
Each CL card model required it's own driver installation CD, if I misplaced my CL install CD, it would take me forever to find the correct ISO to download and make a new install CD.
Even if I seem to be download the correct ISO, CL installation would come back with "incorrect installation disk".
And there is usually 10 separate parts for downloading the CL updates.
For one reason or another I would reinstall my OS (Win95.Win96, Win Me, Win XP, etc.) once or twice a year and sometime it took me a few days getting the CL driver finally done.
I would switch in CL control panel a lot from speakers to headphones, which sometimes screw up the CL software, So I would have to reinstall.
With the Xonar cards, everything is one simple download, it usually never takes more then a few minutes reinstall or update Xonar software.
So that's why I'm a Xonar fan.