Middlemarch, finally!
I'm 50% of the way through and it's good but I don't entirely see the hype. Brontë is more atmospheric, Austen funnier and more incisive, Dickens more immersive. But I've still got a way to go.
Something about it though, feels good to meet folks that have read it.
You can't entirely judge a George Sand novel partway through. For my money, it destroys any Brontë, Austen, or Dickens.