Character driven stories. I like to feel for the characters and relate to them or even understand why they're doing what they're doing. I personally think it makes things more interesting if the characters are the ones making the decisions for their own reasons or motives, instead of just going on some sort of adventure for no reason because the story demands it. Plot driven stories are okay, too, but the characters make everything tie together, ya know? If you don't have interesting characters then it could totally make your story bland and boring. I think a good story should have a mix between the both actually. It should have an interesting plot and interesting characters. =D