First, I will wish to thank amazon for me is THE reference site! (Prices, sav, deadlines, etc ...) As for the helmet, it's really what I long recherchai. -The Comfort is excellent, it's simple, one does not feel like a helmet on the head. -the ears are cold because the helmet is well ventilated. -The "Open helmet" is great, we hear and we hear the other, as soon as one goes up the volume, it is as if the helmet was closed, prime. And finally the sound, it's the most beautiful sound I've heard, it's true neutral but perfect, moreover in this neutrality if SENNHEISER we could do a real pilot worthy of the helmet, c ' ie with at least an equalizer would be perfect! Dolby headphone is extraordinary in games (fps, especially bf3) !!! after testing several real 5.1avec HP in the helmet, I can tell you that none hold a candle SENNHEISER! regarding the spatialization is perfect, there is absolutely no "cave effect" in this helmet, and location of the enemy is immediate, the TOP in BF3 !!! is the top !!! BRAVO SENNHEISER but please change me this driver.