Sure, you could argue that a surplus of antioxidants is what makes chocolate good for you, but we all know the real reason: It makes you happy. You don't really need an excuse to spend a night in with a delicious chocolate bar, but which one to choose? When it comes to chocolate, there is a whole world of variety — just think about all the different brands of hot cocoa alone. We did the research for you. Here's that chocolate bar guide you didn't even know you needed.