I also love Jackie Brown. I've been a huge fan for years, but I still like most of his early work the best.
To me,He went from making awesome movies he wanted to make, to trying to make the movies he wanted to make into epic, drawn out masterpieces. All his newer movies I feel could be 30-60mins shorter and end up being much better. That intro scene in Hateful 8? Comon man, really? Did we need to see all that horse walking.