I have helped alot of people learn to use their GPS''s and as far as I am concerned ease of use is very important as is a clear display and I would buy a waterproof unit next time. I have a Garmin 45 and 48. The 48 is much superior, but it is not waterproof. I would look at the Garmin GPS 76 as it is waterproof and the buttons are on the front so you can see them. Most GPS,s I have come across are NOT user friendly except for Garmin. The 48 is great because it has a good display and is really easy to operate.