newbie here with some gps ????'s trying to go low-$, and the garmin e-Trex Vista caught my eye. seems to have alot of the same functions as the 60cs &76cs, just less memory. it even has a handle bar mount( how tough?). everybody seems to rave about the 60 & 76cs ,is the e-Trex just not up to snuff for trail, and or road maps? thnks in advance for yer replies.