I have a Tomtom one, and the thing is just about useless to me. It's not the Tomtom itself, but the maps and what not for it. I can't count how many times that it has taken me to dead ends, uneccesary routes, and to wrong locations in general. I do keep it updated, but it still doesn't fix the issues. I'm thinking about purchasing a Garmin to try out for a while to see if they may be better. What do you all think about the Garmin GPS systems?