If price is not very relevant - the Stax Omega II is sure to satisfy(just kidding, btw).
Or, even better(seriously).... a 2005 model Beyer DT880 with my specific modification, which fixes the treble reflection/peaking/resonance problems(yes, it has several measured issues that are readily audible via random blind switching w/ a non-modified device) and add a powerful DSP shaping device such as a Behringer DCX2496. I assume these are for home use, there for a DSP device is feasible. If you apply my modification(which i will describe if you request) AND use the DSP device, you have the ability to achieve virtually any headphone sound (within the parameters of detail, timbre and tonality) that you so desire. It is not a conventional headphone set up - but it is superior to virtually anything else if the objective is to achieve your ideal preferred sound signature. I am not a typical enthusiast with typical knowledge; please research my posting history.
-Chris