I love Dive Ball, but Imo it doesn't match Milotic the best. In terms of meaning, though, it matches nicely!
I was thinking Quick Ball matches more in terms of color but not meaning wise. So between Quick and Dive, what do you like best? :)
Or are there any other Pokeballs you like for Milotic? I can't think of anything else.
Edit: Btw, yes, I found a Bold 31/31/31/30/31/31 spread that I could abuse for to get shiny! :D