Only problem is the incomphensible operators manual, which I guess is a common complaint for all the GPSs.
I'm just learning to use my Airmap 100, and my first GPS unit! I tried using it without the manual, and found many of the functions were intuitive to work with. I wound up going to the manual just to keep track of all of the various abilities of this unit. I do not have the Garmin manual for comparison, but the Lowrance manual is a common sense step-by-step tutorial that walks you through all the functions, screens, and setups. As the Lowrance manual is available online, the Garmin manual probably is too. A side-by-side comparison of the manuals you're interested in might be a good way to decide, in a close race.
Carl
