I like Kputts. His are always the best. Most true to the actual vision of the game with some slight tweaks to sharpness, tones, and contrast. Use his GTA5 one as well.
I still havent find a nice sweet FX that does make the game more natural (blue/white-ish), but doenst make the nights and bad weather situations to dark. I can't see %@! when dark cloulds are hanging in the air.