My name is Moose, I’m a GPS addict! I have it everywhere, truck, iPhone, hiking and shooting. The GP-1 despite the cable (I carry spare because they crap out) is still my favorite unit. For me it’s a must working with biologists, it’s the fastest and easiest way to collect data. My only complaint, there is nothing to indicate when you DON’T have it attached. Because of the cable, I remove it when I travel and there are times when I forget to reattach it. I hate that!