I think I was overwhelmed a little on the first viewing to fully appreciate all the moving parts. I also think I underrated Downey’s Salieri-like performance and the smaller choices he makes that I failed to notice the first time. Murphy remains towering, and hopefully will win in a walk.
Really the whole cast is uniformly perfect. The strongest ensemble Nolan has cobbled together since The Prestige. Actually, the structure of both films is rather similar. Almost certainly Nolan’s best screenplay. A more than worthy choice for Best Picture should it win.