We have had the Tom Tom One model for a few years now and it still works for us! It has really helped us for going out of state, day trips or even just for finding an address we just didn't know where a place was! I also like that if you do miss your turn it redirects you in no time! It is a great investment and I recommend it! Processing Speed It loads very quickly and redirects you in no time if needed! Map Quality & Accuracy I have found this to be very accurate with only a handful inaccuracies along the years we have had it. Ease of Use It takes a little getting used to but if you follow the directions you will get the hang of it in no time!