I'm in SoCal ... and have used the system extensively in NorCal as well... It's by far the best navigation system I've used. The automatic traffic rerouting and knowledge of closed roads and exits has been awesome. I am to the point where wherever I'm going I use the navi, regardless of the fact that it's somewhere I go everyday, it knows traffic and gets me there faster.
I obviously can't speak for people in other states, but with primary use in southern california, I have not been able to find anything that gets close to the MFT navi. I wish they'd fix the other software problems, but as far as maps and traffic/incident integration go, I'm 100% satisfied.
I was driving a 2010 Lincoln MKX before buying the 2011 Explorer. In Phoenix there is a belt route, 202, that has been in place for at least four years. The 2010 maps, the latest according to NavTec, did not include the northeast quadrant. I had a Lowrance GPS also loaded with NavTec and it did include that section of freeway. The map on the Lowrance was dated 2007! I was really disgusted with the system and Thought the 2011 Explorer with TeleAtlas database would be much better. So who is a fault? Ford is buying the nav package from TeleNav. I don't know who the bought the NavTec package from but neither one is perfect. However, you would expect the map data to be current regardless of the software.
I think the issue has more to do with the software that manipulates the database than the maps themselves. Does Ford write the software than drives the database or is it totally TeleNav? The POI scheme, address searches and the like are just awful in the current MFT. When you combine the complicated search routines with the very insensitive touch screen it can be enough to generate a string of expletives. We were in Salt Lake City last week and tried to find a Walmart. No matter what we tried we didn't find a single store. When we located a store, not using MFT, the system couldn't find it and we were in the Walmart parking lot.
We've nicknamed our MFT Poke and Stab! With Rebecca's help we've finally got the system working again but unless the software engineers rewrite the whole GPS package it will never be very useful.
It could be such a great system with the 8" screen and all of the other fine features associated with MFT. Bottom line...The GPS, regardless of where the data comes from, it too complex and really doesn't provide the kind of visual cues for a great system. the screen is cluttered with all sorts of info, so much so that you can't see the map. Any attempt to scroll the screen by stabbing in the direction you want to look ends up being a foolish exercise because the system is so slow that when it finally processes the stab(s) you end up two counties away.
I think Ford knows it has a big problem based on the surveys they are doing. The only way they'll fix the system is to speed up the processor, replace the screen, and simplify the GPS system software.
Still love the Explorer. In my seventy-six years this is the finest automobile I've ever owned. I just wish they'd fix the Nav system before folks finally give up and buy a Kia.
Sharin