I am a little bit of an expert here. I wrote the FAQ (now out of date) for the Magellan Meridian series....
Here is what I would recommend as far as requirements:
1) Rugged and waterproof.
2) Mapping capability.
3) Suitable for general navigation (not just car use).
Because outdoor use is primary, and car usage is secondary, I would not go for the Garmin GPS V. It is made to sit in a car. While it can be carried by hand, to me is has sort of a strange shape for hand-held use. It is also larger than others made for hand-carry.
Here are the models that I would focus on:
1) Garmin eTrex (Vista or Legend)
2) Garmin 76S
3) Garmin Rino 120
4) Magellan Meridian series
5) Magellan SporTrak pro
The first thing that you should know about these Garmin GPS receivers is they all have a fixed amount of memory for downloadable maps (largest is 24MB). You get what you get, and no more. The Meridian series used standard SD cards (up to 128MB). This means that you can have an infinite supply of map space (just buy more cards). I have in my Meridian about 5 times as much data as the largest Garmin can hold. I would also rank the Garmin maps as being of a *slightly* higher quality than the Magellan maps.
The first decision that you will have to make is how much memory you need. If you only need one state, or a part of a state, then ANY of the above models will be OK. However, I like to travel (at least before I had children
). I do not always know where I am going to wind up, so to me it is worth an entire section of the country without having to plan ahead which maps to download. If this is important to you, then the Magellan Meridian is the only game in town.
Let's look at each model in detail...
1) Garmin eTrex. These are small and cute. The antenna is these does not work too well while under tree cover. Otherwise, they are nice units. The Legend ($220) has 8MB for maps, while the Vista ($305) has 24MB (plus a compas and barometer). The have nice hi-resolution screens, but the screen is small and can be hard to read while driving. Great size for hiking, though.
2) Garmin 76S ($390). Feature-wise, this is an eTrex Vista in a larger case (compass, barometer, 24MB), with a better antenna, and a larger screen. It is a very nice unit, except that the button are on TOP of the unit, and the display is on the bottom (what were they thinking). It is also the most expensive unit.
3) The Garmin Rino 120 ($220) is a GPS with 8MB for maps, plus a FRS/GMRS radio! If you have two of them, you can transfer your location to the other unit to display on their map! This unit also features a nicer antenna than the eTrex series.
4) The Meridian has a lower-resolution screen than any of the Garmin offerings listed, but it has the most memory (up to 128Mb per card). This is the one that I own. This comes in several flavors. The "green" has only a 2MB base map (most Garmins come with an 8MB base map) that cannot be changed. The "Gold" has a 16MB land base map. The "Marine" is the same unit, but with a marine map (and different colors), and the "Platinum" has the land map, but adds a 3-d compass, barometer, and thermometer. For any of the 16MB models (not the "green"), the base map can be replaced with base maps of American, Europe, or Australia, and all available in land or marine versions. It also has a very nice antenna.
5) The Magellan Sprotrak Pro ($250) is basicly a Meridian with 23MB for maps (no upgrade), a 9MB base map, a slightly smaller screen, and a smaller case. Unless the antenna performance is really an issue, the eTrex Vista is probably a better choice.
By the way: NONE of these units offer turn-by-turn navigation. The only units to do this are not (in my opinion) suited for outdoor use. Also keep in mind that you will have to include mapping software (around $80-$120), plus a memroy card ($20-$60) if you get a Meridian.
Do you need a compass??? All GPS receivers can tell you which way north is if you are moving. Only units with an electronic compass can tell if you are stopped. This is probably not a big deal, but can be nice to have.
You really need to look at your travel habits to determine how much memory you need. Then, you need to determin how much you want to spend. This should narrow it down to 1 or 2 units. Then, go look at these units in person. Comp-USA carries the Meridian series, and some of the Garmins.
When it comes time to buy, be sure that you purchase from someplace who can help you if there is a problem. What does it matter if you get a great price off of the internet, but they never answer e-mail in the event of a problem. I have ordered from
www.thegpsstore.com . They actually have a store in NC, and give you their phone number. They cannot hide after the sale. They are very knowledgable, too.
I hope this helps, and let me know if you have any more questions.