Cow level. Depends on your level, though. Any polearm found in normal cows can be given to larzuk for guaranteed 4 sockets. If you're looking for an endgame 4os polearm I would recommend running hell cows if you can handle it. Pindle running on hell has also yielded me some good bases, socketed and unsocketed. Also keep in mind that if you find a polearm even without sockets and you have no more larzuk socket quests to use, you can use the cube recipe
1 Ral Rune + 1 Amn Rune + 1 Perfect Amethyst + Normal Weapon -> Socketed Weapon of same type
Keep in mind this can only be used on regular quality weapons though, not on superior.
My night is going pretty poorly in LK. She is a cruel mistress. You go all night, and she only teases you with a mal rune here and there. She breathes into your ear, "Do you like that baby? Do you want more?" You manage to stammer out a, "Y... Yes mistress."
And she replies, "No... "