FYI: Just a quick + for Garmin. We just did a 9000+ mile trip through the northern US and western Canada and I found our Garmin RV795, 7" GPS very helpful and reliable. Only one time did it get a bit confused. I was impressed with how detailed the maps were, even showing approximately where we were in parking lots. We did not do anything fancy with it so I can't speak to that stuff, but it got us down the road, found RV parks accurately, etc.