I first started getting into audiophile grade headphones in high school (5 years ago) with Sennheiser HD515 headphones which were (at the time) the best headphones I had ever tried. Since then I have sought other headphones, in pursuit of new sound, new experience, and a perfect headphone. I paid 40 dollars for Sennheiser HD515 on amazon in 2010, and a hundred and fifty for these HD598 now. The quality has gone down in my opinion. Sound stage on the HD598 feels small in comparison, for the money I expected a flat but clear sound and to be honest it...