As I said, most of the episodes are bad. The only reason I watch it is because I desperately want it to be good, and have been rewarded once or twice.

Voyager also stank, at least based on the episodes I watched.

DS9, however, is one of the better science fiction TV shows ever broadcast. But you couldn't just watch one or two episodes, as there was character and plot development, and the character development is arguably the point of the show.