1. Rhythm of War. There were so many moments that I flipped out for. I loved Kaladin trying to set up group therapy to help with his own depression, and other small things like that. We really see the breaking points for Kaladin and Shallan in this one, which makes them all the more human.
2. Oathbringer simply for the climax. I absolutely loved Dalinar's story, and his quote at the end brings me chills still. I just finished rereading that today, actually. "what's the most important step a man can take?" and "You cannot have my pain." are fascinating.
3. Words of Radiance. Still kind of a slog, but we see the characters start to interact more than in book 1, yet still try to feel each other out. Still, Kaladin's journey (and Shallan's revelations) were incredible.
4. Way of Kings. I definitely need to reread this one, but it was a good start to an incredibly ambitious series. I'm glad he's made each book better and resonate more with me. I just didn't like how we had 3 weaving narratives that didn't really interact much, but promised to in book 2.

Overall, if you have the patience and reading ability, absolutely read it. Fantastic books all around. (and get the hard copies: Those last much longer because the binding isn't snapping in half).