WebCam

I am interest getting a new web cam... I am curious what is all of your advice which webcam is best for vlog and others things like chat with other web cam, relay vrs?..... the one that draw my attention is Microsoft LifeCam VX-3000... I am curious what is everyone's opinion? because I notice some vlog is burring or not clear while others vlogs is very clear... fine picture quality. Again I was hope that you can helpful and make a good suggestion for me... thanks