[KodiakClark]

I would recommend GPSToggle. It aquires a lock and holds it in the background so that you don't have to wait aquiring a lock when you open your nav program.

I've been using GoogleMaps since I've unlocked the GPS. Right up until I bricked my phone a couple of days ago. When I get my new one I was going to try Amaze. I've heard good things about it.