I'm an admitted Sanderson nut, but honestly his median output is excellent and the low end is still pretty decent. Stormlight is his best work, I think, but I've thoroughly enjoyed just about everything he's put out. Reckoners (first novel is Steelheart) is quite fun, and probably what I'd point to after Stormlight and Mistborn.
Oh and if you haven't read The Alloy of Law, do! It's Mistborn-adjacent, and I liked it even better.