Batman the Movie 1966, absolutely
I do really like Superman & the Mole Men 1951, but its effects are really bad. Superman the Movie 1978 is fun and overflowing with charm, plus a great cast, but I've never 100% loved the script, and BATMAN 1989 has an awesome Bruce and maybe the best production design of ALL TIME from Anton Furst, but suffers from a mixture of Burton seeming to like Joker more than Batman, and also making a lot of decisions with Joker that I truly just don't like very much, haha 😅
Whereas Batman the Movie 1966 is basically perfect!
Never seen Swamp Thing. Need to do so. Steel is underrated honestly, but it's not shocking that it's nobody's favorite so far!