personally i like Roxio Game Captures. You can do some simple editing and make the quality just as good as a HD PVR. they record really smooth and there easy to use. they only thing i can say bad about Roxio is the editing program that you install. i use either sony vegas or windows live movie maker. you can check out my youtube videos if you like.
www.YouTube.com/Sarafemed
if i actually cared i could make the quality much better. but i dont really work too too much on my videos so they are pretty much normal recording quality.