Showa might be my favorite overall
Hesei is cool, though it kinda focuses more on a return to the intense and threatening animalistic Godzilla, while Showa is funny as hell and is more of a humanoid version of Godzilla. Also gotta appreciate how many iconic moments there are in showa compared to every other era
Godzilla’s moon dance, the Godzilla flight, the drop kick, godzilla’s force pull, the beam struggle, Godzilla eating kong’s tree, and the whole monster gang beating the shit out of ghidorah in destroy all monsters.
And also Anguirus was abandoned after hesei, which I just can’t forgive. He’s an absolute bro, to the point where he recognized mechagodzilla as a fake instantly and fought for his life to destroy an impostor. That’s the dynamic duo that every other era is missing.