What's the best audiophile headphones for under $300 (used)?


There have been some incredible headphones launched a few years ago that still deliver amazing quality for the price and the great thing is that these can now be found for under $300 when they originally cost more than double when they launched.

Now the question is which are the best audiophile headphones that can be found second-hand under $300. What are the best price/performance models?

Here is a selection of some of the best within that price range:

https://www.linephaze.com/selection/2683900f-e9f7-406b-b365-95cb2b1e9ecc

Do you own any of these, and would you add any additional ones?

lionel_hersch

Just picked up a set of phones in this exact price range and I needed closed-back. Did lots of research..boiled things down to the  Beyerdynamic DT-770 Pro X and Sennheiser HD620s.  I chose the latter.  Still breaking them in, sound very good already. 

...and I wanted an open back pair of planars and boiled all the options down to the Hifiman Ananda Nano.  VERY NICE headphones. Great, punchy and extended bass..mids and highs very smooth.  MUCH better than the HD620s  from top to bottom.  But..I did need a pair of closed back phones and for that use..the HD620s are still nice headphones. 

I know this price is higher than what you mentioned, but you did say 'used'. The HIFIMan XV retails for $400.00. I don't have a pair but a friend has them and mentioned that they're a tremendous value. Also, the review on Headphones.com is positive.

https://headphones.com/products/hifiman-edition-xv-headphones

@limomangus - if you don't like headphones, why are you posting on the 'Headphones' category?