DV capture devices are really easy and efficient at what they do, but they do have their limitations. A MAJOR limitation is that you can only capture with the DV codec. It is a true digital capturing system, which means that capturing from analog sources like VHS and laserdisc is not ideal. It will capture only with it's proprietary DV codec, not giving you the option of capturing uncompressed video or with something like HuffYUV instead. The DV capture will look decent, but you will lose a lot of color information right off the bat. And the reds in DV always seem to bleed as well.

Don't buy something like that if you're going to capture primarily from VHS/LD. Buy something like the card Moth3r suggested, or another PCI capture card that doesn't have a proprietary MPEG capture chip. For the X0 Project, we used the PDI Deluxe Card and captured with HuffYUV. That's about as good as it gets for analog capture. Even though that card runs about $200 online, you can find similar cards for as low as $30. For maximum quality, make sure you buy one that has the video inputs directly on the card, instead of having a single output with a multi-input adapter.