I haven't tried all headphones, so I'm not even sure what I'm looking for xD But I haven't bought new gear (except a few cheap chi-fi IEMs) in a while, I have HD6XX with SDAC and Atom and Starfield with BTR5, and I'm pretty happy with this setup. I did get to try the Moondrop Variations the other day and immediately liked it, but I just can't justify the price. I could get a new larger monitor for that much...

I have sold two headphones (Beyerdynamic COP and HE4xx) because I bought Sony XM3 to replace the COP in the office and I didn't like HE4XX for gaming and they were too heavy for music. I also sold my old amp because it didn't go quiet enough.

Nowadays I just listen directly to Macbook speakers...