Mostly my gripe with Voyager is that it never got me interested. I would love for there to be 7 more seasons of Trek out there that I could look forward to watching and re-watching. Some very cool individual episodes aside, Voyager has never made me feel anything other than indifferent.
That's the way I feel. Voyager really had several very good episodes, but I never learned to like the characters enough to find enough good in the mediocre and bad episodes to feel the need to watch them again.
By contrast, I simply like the DS9 characters. That means I like re-watching even the okayish (plot-wise) episodes, or even some of the bad ones.