oh yeah, the webcams suck big time. even the expensive ones. just get a dslr over hdmi. it's 100x better and used dslr is cheap these days. you can even get panasonic gh4/5 which is a real video camera.
You actually want a mirrorless camera, not a DSLR one. If you intend to only use it as a webcam, probably just buy Panasonic G7 or Canon M200 for $500.