>>18919609Actually I think with assault vest it works a bit differently.
If a pokemon has a good enough base hp, you're better off investing in sp.def.
AV does nothing to your hp, just to your sp.def. So if you bulk out more on the sp.def side, AV boosts you more.
Basically from what I can gather:
Want more overall bulk with AV? Hp
Want special bulk? Sp.Def
But I don't use calculators or anything, so I might be wrong. I vaguely remember seeing some calc's that proved this though.