I .purchased two Tom Tom Units- one for my son (a student) and one for myself. My son's unit fell from the windshield on his first long distance trip, three days after intitial purchase, when the suction cup released. It appeared to be the result of changing from sunlight to shade. The fall broke the screen rendering the unit, a Tom Tom One XL, inoperable. Tom Tom replaced the unit but the rplacement unit had only a six month warranty. The replacement unit died completely last week. Tom Tom refuses to replace the unit because it is now... read full review »