Once Upon a time in Hollywood was great, loved it.
Everyone was great, but Brad Pitt stood out for me, really great.
Bit of an artsy film, a bit like 'Hail, Caesar!' - critically loved, but some people won't care for it, because the 'plot' is a bit unimportant, and doesn't take prevalence at all.
I mean it's Tarantino, so you know what to expect, and whether you'll like it or not, but I will say other than Jackie Brown this is maybe his most mature, and most unTarantino film of his I've seen.