Thanks. since I really never use the Etrex I am not about to buy a better unit. The only time I have used the Etrex is to mark points that I want to get back to like the car etc. As far ar recording elevation. This is Michigan and the elevation difference on this trail is probably less than 100 ft. The lakes are at about 650 ft and the highest point in the state is about 1950 ft. The last ice age pretty much flattened the state.