My friend loaned me a Dazzle DVC 80 (I think that's the model). I used it under my Windows PC and it worked great, but I never found the time to get any of my VHS tapes transferred (the main reason I borrowed it). I don't think the DVC 80 is Mac compatible (haven't tried yet) so I abandoned the project once I got my new Mac. Maybe I'll check out if it's Mac compatible, because I have Final Cut Pro HD on here and it would be very nice to get it done on here.
Overall, the Dazzle models work very well for external (USB) video capture.