It's fun to watch the relationship between Kyle and Stan. They have had conflicts, as in Prehistoric Ice Man and Follow That Egg (which was about Wendy).
But they often support each other a lot, as in Cartmanland and even Smug Alert.
Do you think they have different personalities? I think Kyle has a stronger hate of Cartman, which may have to do with Cartman's bigotry.
Stan is always the skeptic about things like John Edwards but so is Kyle.