As everyone else here has said, the unit is great.
I just wanted to highlight that it uses
A) standard AA (or NiMH) batteries
B) MicroSD memory
(mine came with a 128 MB card, but for $8 I bought a 2GB)
C) MicroUSB cable

Pretty much anything you will ever need to replace is available everywhere for cheap. It's as if the heavens above smiled on Garmin and the perfect GPS was born.

I even like the turn by turn better than my TomTom.

I originally had a old Magellan Explorist 500 that I used for geocaching and hiking. Unfortunately it just became a little to outdated and I wanted to upgrade to something with the new SirfIII chip. I first purchase a Magellan Triton 400. That was a bad move. Although it was a nice unit the functionality was just not there and the unit lacks a lot of features. I then purchased the 60CSx from Amazon and have been incredibly pleased with the unit. The unit has quick satellite acquisition, good battery life, great accuracy and a very impressive feature set. On top of that the unit is versatile and works well for trail hiking, geocaching and driving so long as you have the required maps. The unit has a very rugged design and has taken quite a few falls and still works great. Negatives are all minor - purchase a screen protector, electronic compass needs constant recalibration and geocaches can't be loaded directly onto the unit via GPX files. All in all a great unit and top of the line if you are going to be geocaching. If you don't want to spend the big bucks on one of the underdeveloped touchscreen models this the tried and true GPS of choice.

The Garmin 60Csx unit performs very well. Its reception of satellite signal is outstanding. It even tracks inside buildings. The case package and belt clip is durable. The display is bright and clear both in bright light and darkness with its back light. The user interface menu is a little awkward but navigate able once accustom to. I purchased this unit with Garmin MapSource U.S. Eastern Parks Topographical. I am very happy with this hiking GPS.

There are plenty of "what were they thinking" when you get comfortable with the unit, and plenty of things for the engineers to work on with the next model. That said, this unit works brilliantly even in partial cover, getting satellite locks when other units fail. This isn't the sexiest handheld GPS out there, the Garmin Oregon and Colorado units, along with the Magellan Tritons seem better on paper. However, all of those seem to be having serious issues that still need to be resolved. (See the relevant amazon listings for some of the customer complaints.) This is, however, a reliable, established GPS that covers most of what anyone would want on the trail. The compass and pressure altimeter are nice additions to make this a general-purpose device.

Garmin Map 64 MB 60Csx With Barometric Altimeter & Compass

I had one of these before and really found it easy to use. When my first one was lost, I decided to replace it with the same. The large and bright screen makes geocaching so much easier to see.