Is there anyone out there using a newer model of the Tom Tom GPS. Previously I have run a Garmin which I discarded because the display was not adjustable and was too dim to read in bright sunlight. I know the new models of Garmin are supposed to be better. I have been using guidance on my smart phone but it quits whenever there isn't a cell signal. Looking at the Tom Tom Go Comfort 6" GPS but hesitate to try something untested.