i am interested in buying a gps to use while riding. there are a lot of places i would like to ride but im affraid of getting lost in the middle of nowhere. do any of you guys use gps's, if so what kind would you recommend? i was looking at one made by garmin but there are so many different ones i dont know which one i should get. i would like something compact in size, waterproof, and easy to use since i have also never used one before, are they are hard to use and understand. any iformation given would be greatly appreciated.