I wish I would have read this about 6-9 months ago when I started to build my HTPC. I have an ATI AIW 8500DV currently and I don't have a problem with it, however there are some issues I'm stuck with. My processor is only an Athlon 950, so I don't have a lot of processing power to spare. The Hauppauge PVR-250 does all the encoding/decoding on the card itself, so I could record at higher qualities without killing my system or causing dropped frames/audio glitches in the recorded video.
Anyway, I'm just passing this info along since I've recommended the All-In-Wonder a lot and now I wonder if that was the most sound advice.