All Star Trek Series are popcorn escapism. There isn't one Trek show that is "more important" than another. They all have their "deep, contemplative" and their comedy episodes, etc.
They all have high production value, ambitious writing, and high caliber acting(especially Voyager). Berman era Trek series often sought threatre-trained actors for their casts. Almost all of Voyager's cast had established themselves on or off Broadway, except for one or two.
I disagree that these sorts of threads are constructive, as they are mostly divisive. For me personally, when one show is bedraggled over and over again by the same people on here, it makes me not want watch the show they're always praising(say DS9, a show I've always loved) and now whenever I watch DS9, I keep finding more and more cliché, more eye-rolling moments, more stuffy expo dumps, etc. That wouldn't have happened to me otherwise.