Can anyone recommend a good webcam for making videos?

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I am thinking about creating a series of guitar instructional videos to place online and I'd like to use a webcam for making the videos. Can anyone recommend a good webcam for this purpose? I'm leaning towards a logitch quickcam fusion which seems to have good features and 30 fps video record rate-- while not being too expensive. To be honest I'm not sure if that's fast enough to catch what I'm doing while playing, but I've seen awful lot of amatuerish guitar videos online that arn't too bad. One wouldn't think that all that stuff out there and on youtube is made with camcorders. So can you recommend a good webcam, or they just not good enough for what I want to do? Minnie Mouse is HOT! filmbuff