Pros of the Notebooks Pro versus 4000:
1) Better resolution and quality
2) Auto focus
3) Lens is covered with a flat piece glass or plastic for very easy cleaning (unlike 4000 which needs patience and a Q-tip)
4) Smaller
5) Colors seem more vibrant
6) Cost less
Cons:
1) Clippy for mounting is probably great for notebooks but sucks for stationary webcam. I used a clear glass to mount it on for now.
2) USB cord is only 3' long. So I had to buy another USB extension cord which ended up (because I was in a hurry) costing more than the camera!
3) Low light conditions not as good as the 4000
I'm losing light tonight but I should be able to play with it in the morning. This looks like it will be a great little cam, especially for the price!
http://www.surpluscomputers.com/store/main.aspx?p=ItemDetail&item=IMG10117