Voyager suffered from the computer game syndrome, every season they had to up the strength of the enemy they were facing. Where they struggled with the Kazon in season 1, they went against much greater enemies with relative ease later in the show's run.
Though the Year in Hell episode was great.
DS9 had the bonus of being a fixed location so they could explore the characters rather than locations. Add in a great storyline and a willingness to go beyond a single season with it.
Though I hated the Miles episodes. Especially where Keiko was involved.



