Slightly less good but equally important is Jack London's The Iron Heel. Another big influence on the famous dystopian books. Also We is now out of copyright so you can find it for free/cheap. My copy has a futurist cover and a bunch of essays at the end, I think it was only a couple of quid.
@Idiot
I love both 1984 and Brave New World but have never heard of We. I'll definitely be adding to my list of 'books to read soon'