I prefer UTM over all for simplicity sake, and have been using it for some time. Just counting meters east and north is surely easier than trying to convert degrees, minutes, and seconds in my head. Secondly I use lat/lon for my non-cartographic friends when geocaching or just general navigation. Plus in my current job, we have to use lat/long for wireless location services.<br><br>I also like Maidenhead for use in my ham radio activiites, but it is not used that often for general navigation.<br><br><br><br>