Voyager is fluffier? Although DS9 had some fairly teeth-rotting episodes too.
I've inevitably come to the conclusion that there really isn't much that (Or at least not as much as people like to suggest.) separates TNG, DS9, and VOY in terms of quality.
They all have their quality episodes; they all have their fair-share of stinkers. Each has great actors; each has cardboard planks. I think people generally over emphasize TNG and DS9 quality and underscore Voyager's.