My 2006 Explorer Eddie Bauer with the V8, RWD, and the towing package now has 161,262 miles on it. How many miles on your 2006 - 10 Explorer or Mountaineer?
By the way, the overall fuel mileage, based on the EVIC total gallons used counter, is 17.3 vs the (revised) EPA ratings of 13/19.
I'm considering other vehicles, but thus far like the Explorer better than any of them.
If I keep it, I will have the transmission redone before it fails. It is already slightly harsh on 2 to 1 downshifts. The software fix can not correct the leaking valve body, but I've found two companies making kits to fix that once and for all:
Sonnax | Transmission, Torque Converter & Driveline Parts
http://www.superiortransmission.com/Product_Page.cfm?ID=211
The Durango RT is a good value, but the cargo area is no more useful to me than that of the smaller Grand Cherokee.
The 4Runner has a solid rear axle, hard spot in the seat which hurts when I sit in one, and just a 6.1" navigation screen (I've got a 7" Pioneer in my Explorer).
The cargo width of the Explorer works well for my needs, and it is wider than the cargo area of the new SUVs.