What is the best birth control that won't cause depression?

I'm on Yaz at the moment, and have been on it for about a year now. It makes me so depressed and extremely moody! Yaz isn't supposed to do that.. I'm sick of it! I've also tried Yasmin too, but that's pretty much the same thing. I'm trying to find a birth control pill that will bring me back to my happy self. Any suggestions?