[Erythros]

I have been using TomTom for years since first having it on my Sprint 6700 and I have generally had a good experience with it.
I will occasionally use google maps traffic feature since it seems to be the most accurate, but like a previous poster stated if you are in a poor signal area then google maps is out of the question and TomTom will work.

It is a good idea to have at least a 2 Gig memory card to allow yourself free space after installing the maps.