I've installed several bu cam brands, and the best so far that I have come across is the Pioneer ND-BC2. It has a nice 135* viewing angle and great resolution. Contrast ratio is good, and the picture at night is decent even with just the vehicle's reverse lights as the only source. It's fairly small and completely weatherproof. I install a lot of these with good results and have had one on my truck for a couple years w/o any problems at all.