Without a shadow of a doubt the KH3 ultima weapon is the best. It blows all the rest out of the water imo. I don't hate the KH2 ultima but it is a bit weird in some areas. It's a little too bulky in the middle, seems too blunt on the end, and the crowns feel a little cheesy. But all in all I think it's nostalgic and still look at it with fond memories despite its flaws.