If you have a big head, I'd be somewhat hesitant. Having torn down the Elegia and seeing no evidence that they've changed their construction method for the headband on other headphones, a big head will probably put some stress on weak points. On the bright side, they're easy to take apart and mod with a different headband. You'll likely get many years out of the headphones before they break and it's an easy, albeit unfortunate, fix if they do.

As for sound, I have no comments. I only have experience with the Elegia and that's limited (still working on the mod).