Which Android Dash Cam App is the best?

I've been using Daily Roads Voyager on mine for a couple of months now. It works well, but has two major shortcomings: First, I can't figure out how to re-map the directory where it saves the videos to the SD card instead of the internal card. There is a way, I simply haven't figured out how (yet). The second is that it's a battery hog. On a good day, with the screen turned down to minimum brightness, the car charger can just barely keep up with the draw. However, because of the video storage processing and screen display processing, the battery gets hot after about an hour, and then the phone quits charging, and the battery rapidly depletes. If there was a way to turn the display off without sleeping the phone, that would be ideal, but it simply can't as best I can tell.

I'm looking for a dedicated dash cam. The phone just isn't hacking it.