I agree you can't rely on electronics but one thing I like about my Garmin Vista HCX with the micro sd cards you can use, the maps I have both global topographical, nautical and street maps are more valuable than the gps on it. With the solar cells as emergency back ups,the maps are pretty easy to navigate with out any signal you just have to move the pointer every now and then. The GPS function is a plus of that unit, however loss of electronics is a guarantee probability that will happen. Paper copy is always a plus and Delorme has the new Topos just released which is nice to print out what I need and laminate the maps.
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