If I had to predict the winners for the major awards, I'd say that either Frances McDormand or Saoirse Ronan could take Actress, Gary Oldman will win Actor easily (and Darkest Hour will win nothing else), Guillermo Del Toro or Greta Gerwig will win Director, and Three Billboards Outside of Ebbing, Missouri will win Picture, with a possible surprise win for Get Out if the Academy chooses the diversity angle.
I am making this prediction, however, without having seen all of the nominees. I've seen 6/9 Best Picture nominees, plus I, Tonya. I'm still missing Lady Bird, Three Billboards Outside of Ebbing, Missouri, and The Shape Of Water, though I'm going to see them soon, either in a theater or online.
As to the quality the ones I've seen, Phantom Thread is by far the best, but I wouldn't be too unhappy if Dunkirk, Call Me By Your Name, or Get Out won. The Post is one big ball of nothing that I expect to come up empty handed, and Darkest Hour would be on the same level if it weren't for a good central performance.