As an owner of a high end system, you are undoubtably aware that there is no one single "best" in any component category. There are plenty of headphone users that like electrostatics and many that don't, and there is disagreement about the merits of any contender.
I own an Stax Omega II, Mk. I, and a Blue Hawaii Special Edition amp. I like the sound, but it is far from perfect. The Blue Hawaii amp is, to me an improvement over the tube amp that came with the Stax phones, in most respects, but, it does exaggerate surface noise on LPs a bit more than does the Stax amp (also adds a tonal "ping" to ticks and pops), which I don't like. I heard the Stax 009 model headphone with a Woo amp, and did not prefer that sound. A friend heard the 009 with a Blue Hawaii amp in a shootout with the Omega II and preferred the Omega II (not as bright). But, most listeners prefer the 009, so again, it is a matter of taste.
For a much less bright sound and a richer overall tonal balance, I have heard Audeze headphones that I liked. I can easily understand how someone could prefer this sound to the Stax sound (and save a LOT of money).
I own an Stax Omega II, Mk. I, and a Blue Hawaii Special Edition amp. I like the sound, but it is far from perfect. The Blue Hawaii amp is, to me an improvement over the tube amp that came with the Stax phones, in most respects, but, it does exaggerate surface noise on LPs a bit more than does the Stax amp (also adds a tonal "ping" to ticks and pops), which I don't like. I heard the Stax 009 model headphone with a Woo amp, and did not prefer that sound. A friend heard the 009 with a Blue Hawaii amp in a shootout with the Omega II and preferred the Omega II (not as bright). But, most listeners prefer the 009, so again, it is a matter of taste.
For a much less bright sound and a richer overall tonal balance, I have heard Audeze headphones that I liked. I can easily understand how someone could prefer this sound to the Stax sound (and save a LOT of money).