With the game being leaked for those with hacked 3DSs (no, I don't have one), the full list of the version exclusive Pokemon for each version was revealed. Let this decide with the version you're choosing. Left is Sun, right is Moon (Idk why they weren't in this list, but these are exclusives)
lol i preordered both so if anyone needs any exclusives i can get em for ya (though ill be playing sun first so moon mons might have to wait a bit)