Wife suprised me with a Nuvi. I had been looking at GPS units for a while, but couldn't decide on which one. She made the decision for me. I have been amazed at how simple it is to use, just tap menu on the screen select "Where to" and select go. Accuracy is not bad usually off a little bit in tight subdivisions and business parks. It has built in Lithium ion battery for approximately 6 hours use per charge its made it easy to move from car to car without remembering cables and mounts (I've just lay it in the center console on my other car). Size about 5" wide, 4" tall, 1/2" thick and weighs about 5 ounces. Will update as I become more familar and use more (only had two days).