To be honest the performances of everyone I have seen have been phenomenal (Bardem, Cumberbatch and Smith) I have yet to see Garfield and Washington.
Personally so far I feel the best performance was Benedict Cumberbatch's in the Power of the Dog, although something told me he wasn't going to take the Oscar. Although if he had won it I would have been thrilled. But I can't deny that I liked Will's work in this film even though I prefer Benedict.