Really ?! :OI am personally uninterested in a lot of stair levels. I know there were a lot of people that wanted stairs to return, but to me, some of those stages really broke up the gameplay too much. The Great Hall and Wall are prime examples of that....
Would choose Kyoto in Bloom and Waterfall Valley. Beautiful stages. I also really liked the Ray House, thought the lighting was cool; and when I was a kid I would pretend it was Zack's clubhouse and he wouldn't let anyone in but Tina.