Does anybody know if a handheld GPS such as the Garmin GPSMAP 60 can be a safe, inexpensive altermative to purchasing multiple units. I have three kinds of vehicles to cover. I would like GPS for the bike and car that's portable. I would like to use the same device when in my kayak. I know nothing about GPS other than when I rent one when in business travel. I don't need full color. Is there a hand held unit that will travel the country with street details? I believe the Garmin GPSMAP 60 may do that, but the lingo used on the marketing materials are not clear. Things like "Accepts Data from MapSource Products" and "City Select for Driving".