I had the Etrex years back and where I played, it told me to go 180* off course to my truck. Good to test them in known areas!
I sent it to a fella in OH and he tested it and in his area, worked fine.
I'd have walked off a cliff dropping 300' to the river following the unit's directions, but it only "registered" they claimed accurately at a good walking pace...
Ever try that looking at a GPS in heavy brush? Get an eye knocked out!
Then I bought the Garmin 76CSx and it worked well under tree cover and in deeper canyones.
NOTE: If you take batteries out when not in use, you have to go in circles following the directions to "recalibrate" the compass.
I didn't know that! Set a stand and marked it and couldn't find it in the dark and rain next AM...as the compass was off!
Whatever you buy, Charlie, make sure you spend time in familiar areas with someone to get to learn to use it...they DO have a learning curve!