worlds best headphones Sennheiser Orpheus ?

SENNHEISER ORPHEUS are these the worlds best headphone system? If not what is the worlds best cost no object headphones or headphone system? Any suggestions or information please? Thanks
I don't think there is such a thing. I own the Stax Omega IIs. They are unbelievably quick, detailed and transparent. With LP's, it is amazing to hear how small tics and pops come and go so quickly -- no overhang or resonance to draw out the sound.

But, they can sound very dry and analytical when source material or upstream components are not compatible. They are also not meant to be used at ear-splitting levels -- at some point either the headphones or the amp (I would guess the amp) compresses and stops getting louder.

The best I have heard them sound was with Audionote gear upstream. Smooth, warm sounding tube gear upstream would be best.

I've heard Koss electrostatics that sounded warmer and more foregiving, but they did not have the breathtaking speed of the Stax. If you want something that has a bit less of that in-you-head sound, the AKG 1000 is also worth a listen.
Sennheiser Orpheus and Stax SR 007 Omega II are by far the best earspeakers available. While the Omega is quicker and has got more dynamics and punch, the Orpheus is a bit more layed back but has got for sure the better (more beautiful) finish. Overall the Omega II is to my ears (musichian since the 80´s) the better choice. Compared both head to head for a week at home and choosed the Omega II. Source was a modified Ayre D-1X player.
Hope that helps. By the way: forget about the AKG K 1000, or the Grado stuff. Stax and the Orpheus are in a league by their own..
Quite frankly, this is a silly question. There is no "best" headphone just "different" sounding top-line units. Remember the word "best" is subjective to each person as each can have a "best" for them which may not be "best" for someone else.