I'm also shopping. And I'm more in a fog than any of you guys-gals. Is there a GPS that is super-durable - such as waterproof? And can any of them be used outside the USA, like in Panama or Costa Rica? Finally, I'm into not only touring on my GT Xizang mountain bike, but sometimes still use her off-road on trails. Do any of the better GPS units and maps include off-road trails? Not that I'm asking for much. Just something that will last me 10 or 20 years through all kinds of weather, everywhere I can go!

Thanks!