Hi Adam -
I can see you picked up your GPS - hows it working for you?
+1 for the Garmin 60CSx. It's the gold standard - the bench-mark by which all the other GPS units are measured by.
I researched this topic for months through the internet geocaching forums and spoke with some hardcore geocachers i know personally. Though a bit bigger and heavier than the new smaller units, i believed it to be the best choice.
I've been using it now for over a year and now i *know* it's the best choice for me. I use mine for many things - mountaineering, setting compass-course navigation points, general direction tracking in my car - so many ways it's useful.
The battery as spec'ed isn't as high as the *newer* models, yet i always have plenty of juice, it takes a 2GB SD card and so i can plug in tons of maps. Also, it's perfect for marking a great sighting or finding sign. I also like the "track" function - records everywhere i went while the GPS was on. I usually turn it on to get my "bearings" and a bit and as i've getting close to where i want to be, then turn it off.
I've taken it white-water rafting here and it's more than water-proof for all the serious dunking i gave it.
As options i have the cigarette lighter plug-in and one case with the clear plastic over the screen and another nylon case to go over that which is just like a general storage sack.
I think they can be had for around $300 - prolly less now and well worth every penny.
frank