I don't know about anyone else, but I use my webcam to communicate with friends. Image quality wasn't the discerning factor when I got mine. I don't know what your needs are going to be for it. I don't think that there is any webcam out there that will do very high res, that is printable quality, and if there is, it's kind of redundant because you would need crazy bandwidth to be able to take advantage of it.
If you ask me, and if you're only going to use it to video conference or whatever, you can get any old cheapo cam. I have a logitech quickcam express that I got for 36 CANADIAN .. which is like 23 (around) US dollars. You can't really go wrong with it. But then again, it's up to you how much you want to pay for what level of quality.
A few of my friends got the same and we use them all the time. It's great because emoticons suddenly lose their functionality.
