texasgeoman, on 16 August 2011 - 07:02 AM, said:
Yes, I'm planning to keep my Nuvi as my car unit, and want the new hand-held for hiking, field trips, and occasional geocaching.
Budget right now is not a problem, and I'm looking at a couple of higher-end units: Garmin Montana and Garmin 62st, for example.
One thing I'm curious about ... many newer units use touch-screens. Everything these days is going that way, and it works well on Blackberries, tablets, etc. How well does it work on GPS?
At this point, it is a matter of personal preference. I went with the 62s because I like buttons. My friends like the Oregon 550. If the Montana had been out last year, it would have been tempting. . . . although for my uses, the size of the 62 works out well. My advice is always to go to a store that sells them all and see how each of them feels to you . . . All of these will do the job. The display, the size, the touchscreen, and how many bells and whistles you want (such as an internal camera) are up to you.
The preloaded topo maps are 100k resolution. All of the units support additional mapping, including more detailed 24k topo maps -- there are sources (such as gpsfiledepot.com) that offer free maps, including 24k topos, that would work with all of the garmin units mentioned. Maps can be loaded into the internal memory of the units or on an sd card.
Most of the commercial garmin maps can be purchased as a dvd to load unto a computer before transferring a map to the unit or as an ad card to put into the unit itself. The dvd option gives you a lot more flexibility since it allows you to load more than one map onto any one card and to update or backup the maps.
The primary difference in the memory of the unit is how much room you have for internal maps and data -- my unit has 1.7 gb free, but I store most of the maps and cache information on the sd card so I have never run into a problem with space.
All of these units will work better for caching with premium membership on this site. Membership offers you the ability to easily load thousands of caches on your unit and have much of the cache information -- descriptions, hints, past logs.
Since you are a geologist, I hope that you will look at earthcaching -- but welcome to the game.
This post has been edited by geodarts: 16 August 2011 - 08:02 AM