Recommendations for headphones under $400?

The H160 has fulfilled my expectations of basically being the same sq as the h300 and now able to use headphones.
So it is a keeper and the h300 and BAT are listed on here for sale.
Undecided on the hifiman cans though as of yet.
I also picked up a pair of akg ath-m50x at a very fair price and imho their sound is a little more defined with more emphasis on vocals, and just seem more well defined on separation of instruments.
Hours of listening ahead though...

Last post I meant audio technica phone not akg.
Of course it could be that the headphone output of the h160 might not be good enough to drive the hifiman cans well enough. An option I also now have is an external headphone amp as the h160 has a true line out regardless of amp volume so I am covered in all eventualities

Oh well, there are many headphones available under $400. Price is always an issue and I know we all have different budgets. You can get your best pair of Bluetooth earphones at a lower price. With a wide range of compatibility and design you can use it on any of your devices.

The best place to get good headphone listening is with a dedicated headphone amp. 

I wonder which cans Uber ended up with?