I'm still rolling a Garmin 2720, but it's starting to get cranky (doesn't want to boot up sometimes), the display fogs up badly, maps are out of date and I'm not going to give Garmin another $80 for newer maps. I only use the GPS on the bike when we're on our yearly trip, for a car GPS I use my iPhone. For a number of reasons, I don't think using the iPhone for motorcycle GPS will work for me. As money is very tight right now, I'm considering an inexpensive unit, like one of the swarm of Nuvi's. I understand that they are not waterproof, but I'm trying to get an idea of exactly what that means. I know, throw a plastic bag over it. How much rain causes how much damage? Will the unit just get fogged up and need to dry out, or are we talking sparks, smoke, and shrapnel? Something in between, I assume. has anyone actually gotten a Nuvi (or similar) wet, and what happens?