Hey guys, so I have been using the audio technicas m50 for a while now. Maybe a few years, and although I got a great usage out of them, I think it is time to upgrade. My budget is 400 dollars. My friend told me to get Sennheiser HD 598 along with a fiio 130 dollar amp. That is what he has and he says that it works great. Do you think there is a better setup with 400 dollars worth of money? I was strongly considering getting the sennheiser along with the fiio amp but I did research and the hd 598 has been out for 10+ years and has major sound leakage due to old design. But then again I am a newbie and dont know that much about this stuff, I just want to get into music more seriously. Thanks!