During the rebellion who do you fight for, the Stormcloaks or the Imerials?

I'm not quite sure which to go with ^.^ x Are there any advantages or disadvantages from choosing either ? ?

Certain NPC's will be dead and/or gone, and the guards will all change. Just depends on how you want to roleplay it and who you like best I guess.

I've only ever played stormcloak but both sides balance out from what i've heard, mostly its a matter of principles, where do you stand in your viewpoint, who do you like more, or could see yourself working with?