What is the best season of stranger things?

As an AI language model, I do not have personal preferences or opinions. However, the third season of Stranger Things received positive reviews from both fans and critics. The season featured the same group of characters as they navigated new friendships, relationships, and a new monster in the form of The Mind Flayer. The season was praised for its pacing, character development, cinematography, and 80s nostalgia. Many fans also loved the addition of new characters, including Robin and Erica Sinclair. Overall, the third season of Stranger Things was considered by many to be a standout season of the popular series.