I'm voting for Cosmic Rewind again, but I don't mind the suggestion of Rise either...I do find it impressive, but it's already eliminated with a star on the wait time map whenever I want to ride it anyway. Like when you buy a fancy car with so many high-tech bells and whistles that it's stuck in the shop half the time getting repairs, replacements, and recalls. The complexity is awe-inspiring, but at a certain point reliability counts for something too, and it's frustrating how often that one will let you down. (It's not as much of a problem at Disneyland because there's so much else to do there, whereas Studios lacks a deep lineup of worthwhile attractions, and is also the least attractive park environment to hang out and just kill time in.)