Get a hand held. And there are two accessories that are indispensable....
1. A mount for it so you can see it while driving - I've found that sometimes when I stash my handheld into the seat basket, it'll lose signal and that precious "crumb trail" is gone. C Chardt has his mounted right with his gages and it works great. I made a "pocket" on the side of my seat to stow it so it will not lose signal.
2. Get the interface USB cable Make sure it's a USB cable. A lot of GPS units come with serial cables and while they work, they can be a pain to configure. The USB (newer units) cables ones are pretty much plug-n-play. NOTE: If you or anyone has a serial cable, there is an adapter available that converts it to USB VERY WELL.... contact me for info or google "Keyspan usb/serial adapter" It costs about $30
You need the cable so you can enter landmarks. Typing on that GPS screen is worse than typing on a cell phone keypad. With the cable, (and accompianing software) you can create a map with all your favorite coords, then type them in AND NAME THEM using a REAL keyboard.
Plus, your GPS will have a limited memory for where you've been, sooner or later it'll start to get full and unless you DELETE your tracks, they will really clutter up your display. You can save them before you delete them.... and then do some amazing things with those track files with some creative software.

Such as overlay your tracks onto aerial photos, see other info such as speed altitude, etc. Stuff that does not always display on the handheld unit. If you really study your tracks after you get home, you'll quickly know your way around and will soon have no need for the GPS at all.
Now, I've been collecting GPS coords from my travels and from kind souls here on s/a and have a pile of notes and papers on my desk next to the computer - within a week or so, I ought to have it compiled into some sort of useable list. PM me and I'll send you a copy. I'm not sure it's right to post it openly on the internet, but I'm happy to share it with anyone who asks. I just need the time to compile all of it into one large text file.
Keep you eye out for my new everglades map. I've been working on it and it's coming out really nice. Maybe need another month though before it's printable.
Welcome to the forum and we hope to see more of ya in these parts!
Join us at Camp Mack (near Lake Wales) THIS WEEKEND (4/7/2007) be there saturday morning early and have a fun time. Bring your boat or not. It's like a boat show where you KNOW all the boats have pistons in the motors! LOL
matt.