What is the beest quality for mini shark?

[Cocky Cherry]

tell meh the truth

[Bagg Boy (formerly Smoke)]

Unreal or demonic are the best choices.

[CrypticColossus]

For minishark, the best modifier is Demonic. It cannot get Unreal modifier because it only works for other ranged weapons that have knockback, as the minishark has no knockback at all.