Until recently I had been using the iPhone which wasnt GPS enabled but I used the hell out of the google maps function. I was recently asked to demo the AT&T Tilt for 60 days. The Tilt has integrated GPS and works with a service that enable full navigation functionality. I haven't been to stop playing with this damn thing! I just told it I wanted pizza it pulled my location via GPS and gave me every pizza joint within a 2 mile radius.
So how many other people use GPS on the cell phone? Now that I have it, as much as I love my iPhone I dont think I'm going to go back to it just because I love this damn GPS so much.