TL;DR:
_Warbound_ is in last place so far: features long fight scenes, big guns (about which you will hear the details), sloppily done alternate history with modern resentments and insecurities poking out.
_Wheel of Time_ haven't read yet; based on what I remember I'm guessing it will come in fourth.
_Parasite_. I loved the science, disliked the protagonist being artificially prevented from realizing something and this one had an uphill slog anyway because horror.
_Neptune's Brood_ loved the worldbuilding, plus it gave me a sense of wonder aboout *finance* which I wouldn't have thought possible
_Ancillary Justice_ my favorite hands down. Gave me a sense of wonder about the inside of my own head and the structure of my own language.