Hi, I need some advice please. I do a lot of hiking and decided to buy my very first GPS. So far it was printing routes and directions. In bad weather conditions it gets tricky so I would like to have a nice little GPS with me. I would like to be able to download GPX files with a route and than simply follow the route shown on GPS. I was looking at the eTREX20x and than found the GPSMAP 64 and 64s. Can you please advice if these will do the job and if so which one to go for? I would be happy to spend few quid extra providing the device is worth it. Just want something durable and reliable in all weather conditions. Any advice much appreciated.