I love animations. I love 2D Cel and 3DCGI animations. One is not better than the other. Using one instead of the other to reduce costs can make an excellent movie look crap, even if the story is great. However, using one instead of the other will not make a movie better if the story is crap. If you start with a bad story, cut corners, sack animators and use CGI to cut costs, you'll end up with a really nice looking pile of pooh.
Never mind the quality, feel the length!