Not super familiar myself, only ever brushed up against either of them, but afaic, use whatever language you want, as long as the output is semantic HTML. It's not about cleaner markup, it's about accessible markup. I just wrote a whole article about that, actually, as a follow up to this one: Why I care about the Semantic Web
Auth With Twitter
Auth With GitHub
re: Stop using so many divs! An intro to semantic HTML VIEW POST
TOP OF THREAD FULL DISCUSSIONNot super familiar myself, only ever brushed up against either of them, but afaic, use whatever language you want, as long as the output is semantic HTML. It's not about cleaner markup, it's about accessible markup. I just wrote a whole article about that, actually, as a follow up to this one: Why I care about the Semantic Web