Hello, I would like to buy an open back headphone for piano playing. As the headphone is for piano playing only, I would like to buy a neutral and clear headphone with less bass a possible. I have tried the HD598SR and HD600. I like the sound of HD600. Less bass, more clear and bright than the HD598SR. As HD 600 is quite expensive, I am considering to buy the 58X. However, according to reviews the 58X has more bass than HD600, but how would the bass extension be compared to HD 598SR? According to a review, the bass extension was as follows: HD58X > HD 660S > HD650 > HD 600. I live in Europe. The HD 58X costs EUR 190 including tax and shipping, while the HD600 is EUR 278. What would you advice me to buy? The HD58X or HD600.