You don't mention your power source, but if adequate, the Hifiman HE560s might be a nice fit. They are a little less efficient than say the Audeze LCD 2s but can be had new for less than $450.00 and have seen them used for half of that, by the way they are open backed. Enjoy the music
Headphones $600 or less
Wife is working from home so I can’t blast the stereo system like I normally do. So I’m in need of a set of headphones have a budget of around $600. Need help I listen to classic rock very loud.