A good base map is a selling point. :-) I have had an eXplorist 100 in one hand and a Garmin Legend in the other. What I like about the eTrex(Legend) series over the eXplorist series is the ability to hold the unit in one hand and operate all the controls with that hand.
Because you travel the base map is an important feature. I prefer gps units with a basemap.
My list: Base Map of North America
PC connection
Available Manufactures mapping software.
Controls-location
AA battery power. Allows for rechargable or over counter bats.
8MB of availabile memory or more. More, more, more!
With every answer there is a conflict. I chose a Garmin Legend over the Garmin 76. Both offered 8MB of memory. I preferred the controls of the Legend. A couple of years later I was in love with the Garmin 60C w/56 MB of memory. I was ready to buy one when my wife asked a simple question. She knows me very well, is there a model with more memory. I told her about the Garmin 76C with 115 MB of memory. She told me that I should consider it. With a rebate and sale price I was able to a 76C for the price of the 60C. I am happy with it but think the 60C is a great gps.
But none of them provide the fit in my hand like the eTrex series. If I had the money and was a travelling hunter, I would take a very serious look at the new Legend Cx model. While it comes with a 32MB micro SD card, one can buy additional cards or buy larger SD cards. This is a unit that gives you a lot of memory and outstanding battery life.