Oh man, wish that site had Symphony of the Night/Castlevania X on it.
One of my best friends is the Symphony of the Night master. He is #1 in the world (non-cheater) on the Xbox Live leaderboards and has explored rooms that don't even exist. He owns it on every system including the JP Saturn. I could ask him any question you'd like.
IMO - the JP Saturn is the best version because of the extra rooms that don't exist in any other version.