Would you rather play a game with someone better at it or less qualified?

Would you rather play a game with someone better at it than you are or less qualified to play or fairly equal in skill? Would your answer change depending on whether you were playing in private or who would see you playing this game?

If it's a VS mode then I would like a stronger opponent.
In co-op I would like weaker or equal co-player.

It doesn't matter if it's private or public.

depends on if i'm looking for a challenge or wanting to nuke some noobs.