FWIW i loved my DVICO HDTV card (DVB-T not whatever your HDTV is). HDTV IQ was razor sharp, crisp, the drivers worked out of the box and were regularly updated, the remote worked with other apps too, and the DXVA decode was handy with an older CPU (2.1Ghz tbred-b) for 1080i stuff and playing it back.
Still got some awesome CSI captures on my HDD, man they look good

Of course, i think the card used a conexant chip, so according to the experts in this thread, everything must have looked utterly crap

EDIT: (It seems that this is only the case for analog TV, my bad

)