I need a B/U camera to work with my new Pioneer AVH-X2500 BT. I have two cars with cams already - a Lexus factory unit, and an aftermarket no-name that I assume is cheap and made in China. They are equally decent in the day time, but the Lexus does better at night. But the cheapie is good enough even then. It looks like name brand (Pioneer for instance) is going to be $115+. I'm more in the market for $50 or less, given it's a budget project in my daughter's older car. I just needs to be serviceable day and night, and be color. Ease of mounting counts too - full license frame or frame add-on is what I'm thinking. On eBay there are a ton of cameras from $15-$50. I just need to pick the one that's the best value and will get the job done. Any suggestions? Thanks!