>>47337922as a general rule for the sweepers:
>+sp./atk, either -opposite attack or -defense nature>252 chosen attack, 252 speed, 4hp EVs>STAB>STAB/coverage if your mon only has one good STAB>coverage>coverage/stat boost/recovery movechoice band for physical mons, leftovers for bulkier stuff, and then brightpowder, king's rock or focus band or something similar if you feel like dipping into hax, not a lot of good hold items that aren't just situational berries in gen 3 unfortunately
for the bulkier stuff eg. latis, suicune, milotic
>+attack of choice, -opposite attack>252 in attacking stat, 128 in HP, 128 in speed>STAB>STAB/coverage>stat boost>recovery (ESPECIALLY recover, shit is absolutely amazing to have as opposed to rest)same hold items pretty much as the more sweeping mons, unfortunately you can't use soul dew in the frontier (or any facility up until gen 6 I think) so even if you have an eon ticket your lati is still best off with leftovers
oh, also forgot to mention, slaking is really good for the pyramid as most of your battles are 1v1 so you don't have to worry about truant