Tokyo's? Maybe?
Hong Kong's is, IMO, too short (or at least, the layout is a bit too straightforward) for me to be fully on board with its being the best. It also lacks the temple scene that works so well at MK and TDL. The finale is cool, but I'm not sure it's cool enough to fully sell me on its being the best version.
But really, the only thing I know for sure is that it's NOT Disneyland's.