Need help setting up new pc audio system

Just purchased a new desktop - Velocity Micro Edge Z55. Didn't get either of the two offered sound cards - both Creative labs products. Went with integrated sound option with intention of purchasing after-market sound card.

Would like to get top notch 2/2.1 channel audio without going too crazy with the $$$. Looking at several sound cards by ASUS and Auzentech and HT Omega. So many options - can't figure out which one to buy. Can someone point me in the right direction. Should I run Firewire/USB out to external DAC? I would prefer to avoid that set-up unless its really necessary.

Also, very interested in new active speakers. Presently have Cambridge Soundworks Microworks by Henry Kloss which actually sound pretty amazing for what they are. Nevertheless, I'm sure I can do much better. Looking at Audioengine 2 which are very well reviewed. Also looking at Dynaudio MC 15 and Quad 11L active. Would love to hear from someone who has heard all three.

Thanks.