For what it's worth, I had a pair of HD600's back in 2016, but sold them off because I considered them largely "redundant" in my overall collection, at the time. Cut to present day, I ended up repurchasing a brand new pair last month because I actually missed that balance of sound, and am enamored by them all over again.

In audio, often times the amount spent doesn't always equal the amount of enjoyment and appreciation that can be derived. :)