Personally i prefer Lum Berry in some situations, having a free turn of damage while your opponet is trying to toxic/will-o ing you is pretty useful.
But actually i feel that leftovers can be more useful due to the Hail introduction (if you want him for the rest of the match, but i'm like DTC and i prefer to punch holes in the opponent's team at the start of the battle, so i prefer Lum or Rock Gem)
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