I like them all, but Totoro is like, bottom Tier Miyazaki, even if it was good. It doesn't even have much of a conflict. I mean, most classic disney films are more enjoyable. It shouldn't have been higher then near the bottom of the list.
Why does it need a conflict? That's what is so great about Totoro, it's not like so many animated films, there's no villain or anything, it's just a simple tale told beautifully. Totoro and Spirited Away are two of the best films I've ever seen.