I think VOY was a circle back to Federation=good which i loved, and I like that ENT was mostly that way as well (though did incorporate SOME Section31).
I enjoyed DS9, but I always ranked it below the others because of the black stain it put on the Federation- which was supposed to be a utopian ideal, but DS9 just made it dirty like the rest (maybe branching off of ST6 with the assassination stuff, but I always took that as a small group conspiring, not deep state).