I got my first pair on Sunday for my birthday. Hifiman Ananada Stealth I believe. Planar's are great for metal or any music with a lot of instruments. They separate the instruments very well and the bass is impactful. My other headphones are Sennheiser HD 598. Which are somewhat laid back. So it...
Been jamming out all afternoon and it sounds fantastic. If you like to emphasize a certain part of the audio range, lows, mids, or highs their IQ thing works really well. It puts out so much more power than my old Sony AVR.