I've had great luck with Ford trucks over the years, and am intrigued by this. However, Ford does not have a good track record with aluminum bodies on their trucks. I'm on my second Expedition (need the seats to haul Boy Scouts) and they have had aluminum hoods and tailgates since at least '03. Bubbling paint and aluminum corrosion has been a common problem Ford has not been able to fix, and has not stood behind very well. Google Ford Expedition aluminum corrosion and you'll see a lot of issues.
The problem has been widespread, but somewhat hit or miss. I didn't have any problem with it on my '03, though it is almost impossible to find others of that vintage without the problem. When I shopped last year for a used replacement of my '03 I literally could not find an expedition from '03 on that didn't have some corrosion, including some 2012's. I settled on a '10 in good shape, but even it has quite a bit of it on the tailgate.
I'd definitely give this a few years to see if Ford has figured out how to paint the aluminum bodies without having corrosion problems.
