Up until the Dominion War started I liked TNG better than DS9. After that, I was sold on DS9. The change had probably actually started happening with the introduction of the Jem'Hadar but it was the full blown war that locked DS9 in for me for good and it's now my favorite Trek series.
TNG is still my second favorite series. And despite the fact that I didn't like Roddenberry's perfect humans stuff and DS9's take on characters was more up my alley, the TNG crew remain my favorite crew. I do think that DS9 did a much better job handling an ensemble cast though.