So guys, big, tough question. For my next apartment, I will get a premium Schiit stack - Mjolnir amp and Gungnir DAC. I think SolarMystic called it an 'endgame setup'. That is certainly the intention. So the question is, what headset will be the endgame headset for the setup - Sennheiser Orpheus aside (next flat then...).
Here's what I own currently:
Fostex TH-600. My first proper headset, recommended by GAF. Absolutely love it. Phenomenal soundstage, analytical, fat bass.
Oppo PM-3. My travel headset. Works well in airplanes, good isolation, but the soundstage is pretty underwhelming, and the sound is 'just ok' - clear, precise, that's about it.
AKG K712. My gaming headset, recommended by GAF. Insane soundstage, very directional, so great for gaming but might be a bit too airy for music.
Probably all these are a bit too mid-end for the setup.
I've also auditioned LCD-3s in New York, just out of interest. Back then I liked their warmth, but felt then that thy are a bit close and in my face. That was afer several weeks of the Fostex soundstage though, so that might have clouded my opinion somewhat.