Well, if Donati, auditioned and didn't get the gig, I guess DT are aiming real high or are really focused in what they are looking for... So, with Donati out of the race, I would narrow it down to Minnemann, Mangini and Lang.
Like I've stated before, my money is still on Lang, I think he is the "whole package" Lot's of Drumming awards, touring experience, same age group, he's great and very charismatic with the fans and the media and would definitely raise the bar drumming wise in DT.
But at this point, if it's any of these 3, I would be extremely happy!