Auzen tech are good cards but are still a creative card really. I would go with an ASUS xonar they are really solid cards.
This one is a little more then $150 they have a reg PCI model of this card that is cheaper but you want PCIE
Asus Xonar D2X 7.1 PCIe Sound Card $179.99http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4037070&CatId=107
Now I use an X-FI titanium and I love it it has great sound people are turned off to creative because they had alot of problems with drivers in the past but that has all been fixed.
This is the card I have its awesome
SoundBlaster X-FI Titanium Fatal1ty Pro PCIe Sound Card $139.99http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3901279&CatId=107