I own the lowarnce Expedition, it works great. It was used in the beginning mostly for fishing with a lake maps chip. I do not like the touch screen portion of it for hunting, for fishing it was great for scrolling through the lake maps. But when walking through the woods with it around your neck the screen is so sensitive that it gets all jacked up and several times while hunting it has even messed with the settings without me noticing. Just my experience with the Lowrances, hope it helps.