Hi Everyone, I am having a bit of a dilemma.... I need to decide between the 518 and the 598, I apologize because my research has shown many of these threads already, but I still cannot make up my mind. I bought my father the 518 for Christmas and he absolutely loves them. I like them as well, but I felt after awhile the bass was fatiguing and for once in my life I couldn't bare to move the bass higher on the equalizer like I feel with most other headphones/earphones. (And they still had < 30 mins use on them) These will be my first proper headphones that I will use in my room at Uni for long hours of gaming and long relaxation sessions listening to what I would call a wide variety of music. Reasons for this are an annoying roommate who cannot stand the bass of my speakers, with whom I am willing to compromise with. I am willing to buy a DAC if it means I do get a much superior sound output. I am stuck in a rut and hope a few of you can pull me out in the right direction.