I've got one of these:
http://www.magellangps.com/en/products/product.asp?PRODID=90
And this software.
https://www.magellangps.com/en/store/product.asp?PRODID=950
I hvae a pair of 32 meg memory cards for it. 32 megs will get me most of ohio and nearly to indy as I remember. It will tell you where the closest ATM's are, restaurants, etc. It's pretty neat, you can give it an address and it will give turn by turn directions to get there. And, right after I bought mine, they did a "kit" with the GPS, cord, car power cord, windshield mount, mapping software, etc for less than I paid for my stuff with 25% off (when I bought it).
I like mine.
My thoughts.