Might not be much help, but I have a 2008 Explorer Limited as my current company car. I have a little over 80,000 miles on it, it has been to Firestone every 5K miles for oil changes and other recommended fleet maintenance, and I have had almost 0 problems with it. I have a relatively new 3rd set of tires on it, it has had the front brake pads replaced, and the windshield washer pump replaced. That's it.
I have a Deep Impact Blue 2013 base model on the way as a new company car. It should be here sometime within the next 60 days. I have ridden in a few 2013 models as a passenger and I must say they appear to be very nice with the interior being an improvement in almost every way to my current one. The biggest difference is the departure away from the RWD truck platform to the unibody crossover platform, which obviously changes the interior layout and the driving dynamics. The newer engine should be an improvement in HP, MPG, and general drivability. From what I've heard, the majority of the gripes with the newer model Explorers have been related to the MyFordTouch system (which I think has actually been improved somewhat with some software updates). My new one will have Sync (which my current one has), but no MFT, so that is not a concern of mine. Your Limited would definitely have it, so I would take a very thorough test drive and spend some time messing with it in the showroom or with a friend's Explorer if you have the opportunity.