I use Sennheiser HD 800 because i believe if you want good quality you have to pay a little for it.
I only listen to MP3 320KBPS or FLAC files .........
I can recommend this headset, not too expensive for what you get.
Using a Klipsch X10i. The most comfortable IEMs I have used especially with Comply foam tips. Not the best sounding though but it is balanced enough for me.