In my opinion, Brave New World is still groundbreaking now. Not because of the writing style, but because of the ideas and messages of warning for the Mankind. From my point of view, being both great novels, Brave New World is very different to Nineteen Eighty-Four (e.g. [1])

[1] http://www.pensnest.co.uk/A-Level%20Pages/mod5compare.html