Second Mistborn series is imo better than first, probably because he learned a lot about writing in the meantime (and he actually listened to the readers after first), though it have very different feeling, instead of grimdark struggle story you get something closer to steampunk victorian detective.

By that author i can also recommend his debut novel “Elantris”, still my favourite of his books, or Warbreaker, something pretty original and with surprising turn of action and Rithmatist, scholomance genre but actually good.