One of my hunt buds has an F15o with the eco-boost (the bigger one) and he has had some issues (all under warranty he tells me. Something with the timing chain (or belt) and some brake issues, what exactly not sure. His runs good. Ridden in it many times.
Only thing I don't like (unlike my diesel) is you cannot hear the turbo spool up. Myself, I like that music.
My BIL designed the transmission btw. He's proud of it. Hope he don't get the lay-off , early buyout that Fords is talking about. He's been there quite a while and I hear Fords is looking to divest themselves of the older salaried employees in engineering and product development.
I'll have to call him and find out the latest.