I like seemingly absurd mind games such as the thread topic. It seems that the OP is serious about it, so why not play the game according to his rules? It's a pity that many believe to be undoubtedly right with their mainstream opinion and therefore allowed to be sarcastic. That's what ruins many potentially interesting threads.
As much as I liked the PortaPro years ago, I for one don't consider it a serious contender for high-end headphones. Its detail and resolution are too limited to my ears. Even under the reservation of a minor improvement by recabling, I don't see the potential to rival headphones of the class of HD 595, HD 600, HD 650, K 701 or the various Stax electrostats. And although I haven't heard the HD 800, I'm confident to say that there's no contest if you're into high fidelity or have audiophile demands. I even prefer the PX 100 in many aspects, not to speak of the ER-4P or the Audéo, which provide another level of refinement and resolution. That's why the PortaPro gets no use at all these days.
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