DS9 is a terrible Star Trek but a great Sci-Fi series. As a Star Trek show, it goes against a lot of what Trek is esp when it hit War. That said my fave episodes are when they travel back to the TOS era and Sisko as the Sci-Fi writer in the 50s. Ahead of its time. That episode rings more true today than when it aired..which is a tragedy. It should feel less true now.