You want to get a quality one so you want to get a dazzle. It might be a little expensive but is 10x better than all of its other competitors. This is the top of the line "amateur" cap card as there are ones that are priced at 400$ and things you mostly likely haven't even heard of are included in it and you really don't need these extra features.
https://www.amazon.com/Dazzle-Video-Creator-Platinum-VERSION/dp/B000FC4DTW
There's a link to a good dazzle but you'll need some specific cables. Search around on NGU and you'll find a couple good tuts on how to set one up and what you need. I think Oc made a nice tutorial somewhere.
+rep if I helped