The intent of the post is to start a conversation and to have people take another look at YUI. After using jQuery for years in both small and large projects, I took another look at YUI when 3.4 was released and I've really been impressed. I don't think it gets the credit it deserves, mostly because YUI 2 was such a beast. I realize I'm missing a lot of concrete reasoning in the post, but that's primarily because I didn't want this to be a conversation about the right and wrong ways, or simply a syntax comparison.