So here's the deal. Help us make next year's festival even more spectacular by airing your thoughts and opinions in our Sonisphere survey. In return, we'll put you in a draw to win a pair of tickets to Sonisphere 2015. Even if you don't win the tickets, Sonisphere will be better as a direct result of your feedback, so it's kind of a win-win. The survey/competition expires at midnight, 31 July.