The Ford guys (who also use a variant of TOD) seem to be all over this one. Look around on the Explorer forums and you'll see some interesting discussions.

Maugan,
I understand your enthusiasm for the stock TOD, as it is just fine for 99% of VX drivers. I (and others) are of that dissatisfied 1% however. I have issues with a system that is not truly ON DEMAND. When I am driving down a snow covered slope (like my driveway) I DEMAND 4hi -yet I do not get it until a rear wheel slips. By then it could be too late. A fall from the driveway of my new house could be fatal. Therefore, I want -no, I DEMAND control of my drivetrain when I want it.