I have a smartphone but I'm no smartphone expert. Mine is a Tracfone ZTE Valet. It has a GPS in it but I really haven't used that GPS much. This phone has good battery life (probably because it's so underpowered) but I'd still rather use a Garmin GPS unit for navigation.

I'm slightly more of an expert when it comes to GPS units. I work as a cartographer and I use fancy expensive Trimble GPS units at work. No one is going to get one of those for recreational use, of course. When I went GPS shopping for myself I got a Garmin Dakota 20. It's an easy to use touchscreen unit and it works really well. It comes loaded with basic maps on it and you can load your own maps and tracks too. I think I paid $212 for mine and that was a few years ago. We use ours for hiking, biking and driving on roads out in the middle of nowhere. We even used the Garmin to navigate the streets around Salt Lake City when we were there once.