PF1-Lords of Rust (Nicholas Logue) One of my favorite BBEG's in a book and really nailed the sci-fi vibe of Numeria. Also did a great job setting up the rest of the AP imo.
PF2- Ready? Fight! (David N. Ross) High-level play is really fun and this brings home how creative fights in a fighting tournament can be in a fantasy setting. Exploring Goka was fun and cannot recommend the entire AP to my friends