If you're even slightly treble-sensitive, I would recommend auditioning the Clears before taking the jump. I purchased the Elex because of the good reviews, but when it arrived, I couldn't stand it for more than 5 minutes because it was unpleasantly hot at the top for me, although i could still appreciate the nicer aspects of the SQ the reviews and impressions were enthusiastic about. I had to sell it very quickly after that unpleasant experience, and I hear the Clear and other Focal cans share the same attributes. I maintain, though, that it is a personal thing that others might not experience in the same way. It might work better for you than it did for me, and the focal cans are certainly popular, so I am sure that hotness doesn't bother many of their owners. Personally, I never, at any rate, considered myself to be treble sensitive until the Elex experience. This is why I think the audition-before-you-buy approach might be appropriate in this case.
I have never had that problem from any Audeze cans, although I do own quite a number of them, including the X. Even the Sennheiser HD800 handles really well to my ears on my rigs, although it has a reputation for a certain annoying peakiness. Just my two cents.