I tested 4 different brands, this was by far the best performer and most reliable even in minimal light situations. i was actually able to power the monitor with it so i am very impressed.
I wanted to be able to move around my camera between vans. This with a suction cup for my camera allows me to do it. The solar panel has a built in battery that allows me to use the camera at night. I have not yet been able to use up the batter because by the time I'm done with it its already getting sun and recharging. I also like that it shows how much battery power it has in storage.