I just wanted to thank you all guys, you have really helped me a lot. So I have ordered ATH-AD900x from Amazon, kind of on impulse. I really liked the AD500x when I was in the store, so I wanted to buy that one, but when I saw the discount, I just couldn't resist it. In the end, I will probably never have another chance to take advantage of those incredible Amazon sales and discounts, as I don't live in the States and my brother is already returning in a couple of weeks. I hope I made the right decision and they won't be worse than the 500 model Thank you again for all the help, I really appreciate it!