I have use top-of-the-line hike gp unit from Magellan , Garmin , Delorme , and Lowrance and this explorist 710 get the highest grade ! it simply do everything and do it well . not only be it superb for hike and geocach , but it also will deliver door-to-door speak direction turn-by-turn . the build in camera do a great job at grab those `` I wish I have a camera right now '' shot . it have a large screen which be easy to read in sunlight and the intuitive touchscreen control be well think out . I do not understand the criticism from some of the reviewer here . if you want high quality video , then buy a high quality video camera ! do you really expect hd 1080p video from a hike gp unit ? come on people get real ! the only other gp that come close to the 710 be the Garmin Montana , but since the 710 come with Summit city map as well as complete US topo map pre-loaded , it be clearly a better deal ! highly recommend for hike and geocach !