Another old thread brought back to make ponder my answer.
Still gonna say Flash.
Pretty much everything before Flash Rebirth and Flashpoint. I could go on a huge rant on this subject (I have many times before!). But really the conceit that underlies those two miniseries (and everything that has come across since, has really diminished my appreciation for Johns writing! (He’s a nice guy in Person, But I just can’t agree with his Tragedy makes better super-heroes philosophy)