Yeah Logitechs are the best way to to. I have a Trust webcam and while I have not experienced any problems with it, I've heard that pretty much any brand is inferior to Logitech from independend computer salesman/technicians. Take that as you will.
For under 50 bucks, though, this one is probably a better bet:
http://www.bestbuy.com/site/Logitech+-+C600+Webcam/9423448.p?id=1218102963407&skuId=9423448