I use a Dakota 20, I love it. I used to use a smartphone because I had an older GPS which did not allow for paperless caching, now that I upgraded to the Dakota, I just load up a pocket query on the unit and then I have 500 caches ready to go. I use the routable maps (openstreetmap - free) to drive to whichever cache I pick, then switch to the topographic maps (also found 24K maps free)to find the cache. It's pretty convenient. The battery life is miles above my smartphone, (I don't have an Iphone, so please don't yell at me for saying that, Iphone people) and when it rains or snows I don't have to shield the unit like I'm protecting a new born baby. I just take my time and look at the map. I didn't get an Oregon because I wanted something smaller with the best battery life I could get out of a touchscreen unit.