They all suffer from overindulgence - at some point someone needed to put their hand on his shoulder and suggest ‘could you not’ over certain scenes. But I think Django is the least guilty and Kill Bill 2 is good until we get to Bills house.
You can describe plenty of scenes in his movies as being self-indulgent, but I’ve come to appreciate it as part of the package by now. Sure, some people probably wish that he’d just made ten Reservoir Dogs, but I think that’s showing as his least interesting movie. It’s really good, sure, but I’d probably want to watch almost any of his others before that one.