I currently using my built-in realtek soundcard with S/Pdif. Its works great for now. But i want to upgrade to something much much better.

anyone can recommend a good sound card from Creative for my z5500 .
i watch mostly  High Definition 720p/1080p Mkv.files with DTS and i'm also a hardcore gamer.

Edit : Btw, i was just checking this Sound card. PCI-Express Xi-Fi titanium.
Any opinion sifus?

well, i'm using a digital cable  direct S/pdif to realtek onbard. For movies  with DTS its sounds great.
Games wise , its sounds not so good for analog 5.1 or stereo. i THINK my Z5500 can do better with a good sound card for movies. and games of coz.
any suggestions?