Opinions on Garmin?
Anyone have experience with the Garmin etrex 20? I'm considering one - I have a used Magellan 310(I believe) that I paid $30 for...has worked great last two years Elk hunting - I basically just use to get elevation, mark elk sign, and back to the truck. But - the farther I venture the more I can see use of topo when trying a new area that I don't have a "mental snapshot" of...plus would be nice to know how close I'm getting to another road or waterway.
Opinions on importance of barometric altimeter?
Opinions on 3 axis compass vs magnetic?
One of my sons has an eTrex, he really likes it. I can't speak to the specifics you ask about as I have not used it that much. For my old eyes and ham hands the buttons are too small and poorly marked and the screen is too small. I prefer my Garmin GPS72.
I have a DeLorme Earthmate PN-40 from about 5 years ago and I don't like it one bit. Slow, loses signal, locks up constantly and eats batteries. If you try to track your position and leave it on, it will be dead in 4 hours. This year I will be using my iPhone with a $5 app instead.