Personally, IMHO I would wait until year 3 of production for either one....the Ex is a new series chassis, etc and although with regard to the drivetrain- there is nothing new here it is new to this chassis & just like the F150 EB (which has air intake/intercooler issues), there are inherient design issues that are unidentified until the public gets a few hundred thousand miles on.....by year 3, they will not only have everything fixed there will be needed enhancements as well.