Hifiman XS w/ Dekoni nuggets gets pretty close to peak dork.

HD599 would be perfect.

I really like the 9200. They have a lively sound signature and natural sounding vocals, which IMO not many closed back headphones get right. I wish the ear cups design was better (full over ear design like Sennheiser would be ideal), but they’re still comfortable for long listening sessions. I use them for movie watching when there’s too much noise to use my HD800s. Purchased from eBay as open box for about $1k.

BTW I bought (and returned) a Sony MDR-Z1R recently and thought they were awful. Really cool soundstage but bloated bass that bled into the midrange. I was honestly shocked with how bad the bass was, considering online reviews I had read.

Thanks for keeping me from “upgrading” my HD650. :)

I would love to hear the difference, though!