Arrow season 1, 2 and 5 are great, flash season 1 is great and season 2 is pretty good up until the last few episodes and then the show sharply declines.
Supergirl season 4 is easily the best and most interesting as it basically has her square off against more competent Ben Shapiro.
But the real fun is Crisis on Earth X. That was so much fun and the highlight of the franchise. It's just batshit insanity and the fight at the end of the first episode is one of the best of the genre. The end of episode 2 is a pretty brutal fight as well.
Supergirl season 4 is easily the best and most interesting as it basically has her square off against more competent Ben Shapiro.
But the real fun is Crisis on Earth X. That was so much fun and the highlight of the franchise. It's just batshit insanity and the fight at the end of the first episode is one of the best of the genre. The end of episode 2 is a pretty brutal fight as well.