Well, all the eye candy aside, I always enjoyed Voyager more than the others because it was a little more like the Original Series. ie. "Seeking out new life and new civilizations and boldly going where no one has gone before". I really did like TNG, but I don't really think the whole series was based on an exploration mission, per say. At least that was my take on it.
But the fact that Voyager was in the Delta Quadrant (which was widely unexplored) it seemed to me to be more to the heart of what Star Trek was really about. My $.02...