pseye: 60 fps, more in-sync with gameplay than other webcams, fairly cheap on ebay/other online stores, colours are pretty dull and washed out however with sufficient lighting it should be fine. only has small resolutions like 640x480 though it shouldn't matter if it's placed at the corner of the live stream
drivers are harder to find now but meh, if you do get a pseye google around for cl eye drivers
before this i had a logitech c270 which was slightly more expensive. it has better colours but the delay between webcam and gameplay was fairly noticeable, though quality-wise it looked better overall, motions just weren't as smooth as they were on the pseye
tl;dr: pseye for accuracy and 60fps swag, logitech _____ for quality