I like the Explorer even with the MFT problems but if MFT is reason you want the new Explorer, I would probably wait to see if the issues get fixed. The posts saying it is only a small minority that are having issues are belied by the fact that Ford's quality rankings have dropped (b/c of MFT), the automotive press have noted issues with MFT, the consumer electronics press have noted issues with MFT, CR has noted problems with MFT and even the president of Ford has publicly acknowledged issues and has thankfully indicated that Ford would be working to address these issues. All this goes to show the problems are not just a few complainers who came to this forum to express their frustration.
The funny thing is my early posts were here were not to complain but to staunchly defend my purchase (lot of psychology in wanting to reinforce my decision to purchase) and I praised MFT quite a bit. Unfortunately, after a few thousand miles of driving, I started experiencing the bugs and errors many others have noted. If you can live with the bugs and errors with MFT (I have learned not to rely on anything MFT related because it seems when I really need something, it won't work, usually to the great amusement of my wife who wanted me to get a Lexus), the Explorer is great as a solidly built and comfortable SUV (no complaints here).
I don't really regret my decision because the car part is great and I am relying on Ford's promise to fix the MFT issues. If I had to do it over again, I would probably wait for the next major release (a 3.x version) of MFT which I assume will reflect Ford's first real attempt at a comprehensive and overall fix of the system as opposed to the 2.x minor releases which I view as more stop gap bug fixes and stability releases.