Personally, I'm torn on DS9.
On one hand, it is quite conflctual with Roddenberry's ideals.
On the other hand, there are quite a few good characters and stories in there, if you ignore the religious/anti-humanist propaganda (and the Bajorans).
DS9 is basically the converse of VOY: VOY tried to build upon TOS/TNG, but was poorly executed; DS9 deliberately went against TOS/TNG, but received such quality execution that it just cannot be overlooked.
In the end, it's not the best, it's not the worst; it's middle of the pack and, like all Trek series, has great episodes and terrible episodes.