I think Amanda Downum is my favorite. 
 I loved the atmosphere, the gritty adventuring, the gorgeous and respectful handling of trans characters, the blood and magic (and blood magic), the wealth of capable women. 
 Really, about the only thing that didn't entirely work for me was Isyllt's most serious romantic connection -- but I think that's just a matter of me not going for the mentor/student trope in general. 
 And Savendra's relationship plot made me so happy I could barely stand it, so it balances out.