I purchased my Garmin Nuvi 680 about nine months ago and it is the best money I've spent this year.  Don't get me wrong it is pricey, especially compared to other units, but it is worth every penny.  The things I love about it is the size, it is flat and I keep it in my purse when not in use.  The blue tooth is a must have, it is great when you are on long trips because I am not a fan of the ear pieces, they annoy me, so this is an awesome alternative.  Additionally, I have a Motorola Razor phone so my text messages sync with the nuvi and I can either listen or read them on the screen. I...