I have a Pyle wireless backup camera. Don't Buy One of these. The signal from the transmitter is to weak and it rarely works. it also turns itself on every time you drive past someones wireless driveway camera.
I am watching this thread myself to purchase a new one.
The Fusion one looks good to me. Especially since their web site has a video on how to install it on my make and model of truck. If not for that I have been avoiding wired cameras because getting the wire into the cab could be tough. Since they have a video for my truck that should make it easier.