I just make a post at TomsHardware for get the opinion of users at http://www.tomshardware.co.uk/forum/id-2347857/30fps-60fps-opinion.html
Comment you response for these questions:

1.At what fps do you usually play? 30/60/120?
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2.Do you experience a better performance or you enjoy more the game at 60fps than 30fps?
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3.Do you think having 60fps would make you a better gamer that the one with 30fps?
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4.[OPTIONAL]What are your computer's components?
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