Whew, thanks Marcster! I've been going back and forth between different models and price ranges but I think (still thinking) about going with the Tom Tom 3rd Edition. You can get it online now at Costco for $129.99. It doesn't have all the features I wanted (like text-to-speech and widescreen) but for the money, I think it will be a good starter GPS.
It seems like so many electronics these days are basically disposable, so this way I don't have too much money invested when in a year or two something really good and cheap comes out. Thanks again for all your help. It's been a fun learning experience!