Which GPS is best for Mexico?

Seven or eight years ago we used a Panasonic GPS with a slightly larger screen than was common then, It had advertised Mexico maps, the reason we bought it at a price quite a bit above the regular ones. I was somewhat useful although we relyed mostly on map books in those days. It was interesting once time when we had wanted to take a seldom used road from La Huerta, Jalisco, that connected with HWY 200 just south of Punta Perula. After finally finding out where the road started out of La Huerta, we followed the water truck onto it. The GPS didn't show any road but, every time we came close to a river or stream, it was noted. The road itself went from being almost a wagon trail to a beautiful highway-which no one took as the bridges had never been started. Boulders warned any drivers of a diversion and to take the roads down the hillsides. Eventually it became a fairly good gravel road that took us to the main highway forus, back south. The three cars on our trip had stopped en route by a stream for lunch. It was a Sunday and the locals were enjoying the river, too. We soon found ourselves being offered chairs to sit, food and a special drink they were having. What a great, small village of the most friendly people. What I really miss about Mexico!