Fidelio, you say the Cantatis Overture 192 is better than the "Audiotraks" - have you heard the Audiotrak Prodigy HD2 Special Edition, too? http://www.itemaudio.co.uk/prodigy_hd2.html
It has fully discreet Burson Audio dual opamps.

Can anyone tell me if discreet Audio opamps are always significantly better than IC opamps? Especially the Bursons?

Cantatis Overture 192 Soundcard:
I haven't heard it or any of the other cards - but if anyone of you is looking for the best price - this might be a fair deal: 20% discount ...

http://www.bbcmusicmagazine.com/cantatis-overture-192

http://snipurl.com/BBCMM20 + discount code ‘BBCMM20’ (they say it works with amazon too)

Here you can find some more detailed pics of the DACs etc:
http://forums.guru3d.com/showthread.php?t=306851