I think it depends on what you look to each show for.
I found Voy. had better humor and far more action than TNG.
I found with the Doc. B'Elanna & Seven, Voy. dealt with issue of civil rights and prejudice better than TNG did.
I felt TNG did better political stories, while Voy's were more interpersonal.
I think I related more with the character on DS9 & Voy better too. I think Tom & B'Elanna are the most realistic characters in any Trek series.
I've always thought in the back of my mind If the characters in TNG were real, they probably wouldn't be interested in talking to any of us but the ones from Voyager would.