I've noticed the war between people about each side "Empire svcks cuz they banned Talos" or "Ulfric is a madman" sure but I am at a stalemate as i've played both sides and extremely similiar i just don't know which side I want a leader as. I keep thinking if Ulfric BECOMES high king then Skyrim is [censored] in the ass for ANYONE who isn't a Nord. He just wants power in the end, or get a weakened empire that will fall soon, thalmor will be pushed back, Skyrim turns to Elisif and BAM independent Skyrim. So either side you choose will always be the same it seems to me. I just don't want Ulfric as a leader.
I don't think with Elisif as the head that Skyrim will be anything but a puppet for the empire. It was the same under Torygg. If you observe her as she makes decisions, notice that she is VERY dependent on advisers telling her what to do. She is constantly making decisions, and then going back on them when her advisers tell her that it is a stupid idea. It's not that Elisif is dumb or unable, but like Torygg she is young and inexperienced. She relies too much on people telling her what to do, people who may or may not have Skyrim's best interests at heart. I can guarantee you that with an Empire victory, she will be taking THEIR orders. No matter who wins, Elisif could never truly govern independently. Ulfric's claim that Torygg was a puppet of the empire was not baseless. He was. That doesn't mean he deserved to die for it, of course.
Personally, I think that Ulfric as high king is the best thing for Skyrim. He has not shown at all that he would remove or make life a living hell for non-Nords, at least no more than the empire itself already does. He's a strong leader and knows when to seek the advice for others and when to stand up for his people. That being said, he is a jerkass who desires power above all. The thing is, I don't necessarily see that as a bad thing, or the doom of Skyrim. What makes a Stormcloak victory so interesting is that Ulfric's rule could really go either way.
But to be honest, the only thing that is stopping me to side with the Stormcloaks is the racism and that Ulfric is being consumed by power, he wants power, and will want even more as time pass...
I'll help you out. The Empire is just as racist as Ulfric, if not more. Ulfric himself does not express any racism at all throughout the game, despite what people say. If you've played Oblivion, you know how horribly the Empire treated the beastfolk. And if you've played Morrowind, you know that with the support of the empire, the Dunmer enslaved the beastfolk. All of the holds do not allow Khajiits to enter, even if they are Imperial-controlled. No matter which side you join, you are on the side of racists.
For your second point, you are right. He does desire power. However, I would argue that that in itself is not evil, and is not a bad thing. As long as he is capable of wielding that power, who cares if he wanted it? Ulfric has the potential to be a great leader for Skyrim. Whether or not he meets that potential is yet to be seen. But as someone who has played both sides of the civil war questline, I will say that I was much more confident in the future of the world at the end of the Stormcloak questline. The Thalmor are going down, with or without the Empire.