After using my friend's TomTom 330, I decided to get one of my own. I got the the GO 630 model with handsfree bluetooth, custom icons, down loadable voices, on-screen caller Id, media player, fm tuner, and the list goes on... All for $160 after taxes (futureshop deal).
I must say, I am impressed at the accuracy and how quickly it adjusts after I choose a different route. It is almost instantaneous. The ability to save favourite routes, itineraries, and driving speed with highlights when going over the speed limit is a great feature. I have never owned any other GPS units, but I don't think there is anything I could possibly want the TomTom doesn't already give me... well, maybe the ability to see where I am as far as the entire planned route is concerned, like a top view of my entire route. Who knows, maybe it does show it, and I just don't know how to do it!