Batman Forever in my case. While I enjoyed Batman Returns on my initial watch, every time I look at it again, I see more flaws. I felt that Michael Keaton, who was amazing in the first film, just kinda lost the touch this time around. I didn't like the balance, nor did I feel the film felt like a real story.
It was a character piece, and the characters it focused on weren't very good. Penguin was rotten, sure, but I couldn't muster much sympathy for him. Catwoman was tragic, yes, but she came across less as logical and revenge focused. I always felt she was just plain nuts. I just never cared about any of them after awhile.
As for Batman Forever, it was a story. It had a clear beginning, middle, and end, with a paced out plot, time for character development, and some genuinely good acting from Chris O'Donnell in a few scenes.
It knew what it was trying to do. It was a goofy, but was aware of its goofiness. When it was silly, it would play it up for comedy, and revel in its silliness. When BR was goofy, it still triedt o play it off seriously (penguins? Seriously?). While Two-Face was the huge reason why I feel this film stumbles, the Riddler is awesome, and Robin has a genuinely well-written character arc. I wish he did more, but I think that was handled well.
Plus, Batman Forever was actually a Batman film.