>>39854290>Fast BallHas no equivalent. The Quick Ball is turn-based, while the Fast Ball is useful for catching "fast" Pokémon (those with a base stat equal or greater than 100.)
>Level BallThe Nest Ball works with Pokémon that have a level equal or lower than 29. The Level works with any Pokémon that has a lower level than your own.
>Heavy BallIt's self-explanatory. There are plenty of heavy Pokémon around and no other ball is specialized in catching them.
The Dive Ball is Better than the Lure Ball, the Luxury Ball is slightly better than the Friend Ball, the Repeat Ball is less restrictive than the Love Ball (although the Love Ball has a better catch reate) and the Moon Ball is too situational to even be useful.
Plus, Kurt's Poké Balls have good designs and animations.