My answer to your question would pretty much be what I posted in that second paragraph. The PDI Deluxe is the best capture card I've ever used. Aside from that and the Black Magic boards (which are more expensive than the PDI I believe), you're going to see a lot of similarly priced capture cards in the $30-$50 range that will give about the same results. I don't know of any USB devices that are similar. You might try out one of the bargain basement PCI cards just to see what kind of a result you can get. In theory, a card that doesn't have a TV tuner or any other bells a whistles that interfere with the capturing process would do the best job.