I've heard about these. I'll probably give it a shot soon. I need to buy some wax and put some on the Corolla (washed it once so far and am already seeing paint chips ... ugh ... I hate CA-78, who paves a freeway in 2014?)
I use Maguire's Full Synthetic Wax. Love that stuff. It's fairly easy to apply, doesn't require a ton of elbow grease, and leaves the car looking amazing.