I have the same problem as the OP and I've been using Garmin GPS units for years WITHOUT the map feature. I prefer to not use the map because it's just too hard to see. I design my routes at home and upload in my GPS. When it's time to use it, I do not use the map but only use the "ARROW" screne!

I can travel 80 miles with just the ARROW pointing me in the right direction. The ARROW is clear enough to see even during the day. Learn how to make routes on your PC and practice using the GPS in your neighborhood. When the GPS shows .15 to your next turn, look at the direction of the ARROW.

The maps are good only if you get real lost. This shouldn't happen if you know how to create good routes. I've traveled hundreds of miles without ever looking at a map.

By the way, I use the inexpensive Garmin Legen CX selling on Ebay for $120.00 bucks! No need to go out and buy the most expensive one out there. Just get the map software from Ebay and you are set to explore the world!