Has the navigation on these things improved recently?
About four years ago I borrowed a friend's TomTom, and trying to navigate to a major hotel (the Hill Country Hyatt in San Antonio), it routed me to a country road past houses with cars on blocks in their front yard, then it came to a dead end.
When returning home to Richardson, it didn't seem to know that Campbell Rd connects from Plano Rd to Jupiter Rd, so it wanted to route me a few miles to the north to make this one-mile segment.
I bought a Magellan unit about three years ago, and it doesn't seem to know that Hwy 380 connects from Decatur to Denton. Coming back home last weekend I was using it, and on the path from Wichita Falls to Richardson, it was telling me a path that was a full hour longer than the optimal path (Decatur-Denton-Lewisville-Richardson). It wanted to send me through Ft Worth instead. As soon as I turned off 287 in Decatur and got on 380, it suddenly figured out "Hey, here's a better path!" and cut a full hour off my estimated arrival time.
Pretty much every time I've used it there is some major screw-up like this. I thought the point of having a GPS was to reliably get you from one place to another, but since I can't trust it, I have to verify the route through another method before the trip. What's the point then?