Summary: I had an old TomTom ONE 3rd Edition that finally passed on to its greater reward after many years of great use. I did my research and updated myself to the TomTom XXL 540TM, and haven't regretted that decision. I was definitely after the Lifetime Maps option, a big plus. I also wanted the 5-inch screen on the new device, a must for these "not so young" eyes of mine. *grin* A big surprise was the voice reading the street names, which I really appreciated!