Well, I'm looking at my playback of raw footage and it doesn't look that good at all when I maximize the video, I have fraps set to recrod at full size - but it still has some pieces that are grainy. I like divx because it seems to maintain an awesome quality while taking the size down really far. As well when you upload it to a youtube the quality seems a lot better than most codecs.

When I get on, I'll take a look at recording with different video sizes, maybe that is my biggest issue at the moment.