I'm new here too....I haven't bought a GPS yet, but I've been researching them. There's TONS of good information on these forums regarding many different manufactures. From what I learned, I 've made the following observations:
Tom Tom seems to be more specifically for driving naviation, road directions. etc.
Your number one priorities for a GPS to use while geocaching should be ruggedness, waterproofing, waypoint storage, basemaps and what method is used to enter data into the unit.
The two biggest brand names for handhelds seem to be Garmin and Magellan. And then its a HUGE debate. lol. There are die-hard Garmin lovers who will bash and trash Magellan. There are die-hard Magellan lovers who love to argue that theirs is better and Garmin lovers are wrong. It almost seems quite like the Mac vs. PC debate, thus it's very specific to the individual as to which is best. I would suggest you go to a couple stores and actually play with the ones they have in stock. My personal observations (and i'm sure there will be Garmin lovers who disagree) so far from my research is that you get more features and capabilities for your money with a Magellan, but you could sacrifice customer service if you develop a problem. Garmins will cost you more to get similar features, but their customer service seems to be the best. When it comes to working through a problem and having patience about troubleshooting, I am pretty good with that, so I have decided to wait and get a Magellan Triton when they ever show up in my local stores. My friend who is also new to geocaching has less tolerance to deal with troubleshooting and customer service, so she went with a Garmin because she was afraid that Magellan's customer service would make her too irate.
I hope this helps. There are several links throughout these forums which give good info as to what features are best for geocaching.
I hope this helps some.
It does. I appreciate your help. I think going to the store is a good idea...I've been staring at the computer screen pics of the different units for 45mins...I'm beginning to lose IQ points