I have not heard the Elegia yet. But if you are considering it against the Clear, buy the Clear! I am saying this because first of all, I own the Clear, and it is the only headphone I have not sold or think about selling after some trying. Obviously this is very personal, but I just love it. It does not have the insane detail of the Utopia, but it is much better balanced tonally than Focal's flagship. Even disregarding the price advantage, I would still settle for the Clear.
And then compared to the Elegia: In spite of the fact I have not listened to it, I dare say it won't be as good as the Clear. 1. Looking at the price point, it might be more a closed equivalent to the Elear, not the Clear.
But more importantly: If noise insulation is not a requirement, I think it is safe to say, always buy an open headphone. Again generalizing, at a given price point, I would say any open headphone will sound better than its closed peers. Hence I do not understand that people compare open and closed headphones, it's apples and oranges.
IMO, there plenty of great open headphones out there. My favorite at the moment is the Clear, but I am also very curious about the new Ether 2.
For closed back, IMO it's a different story. I need a closed HP for work, but haven't found a good one for me yet. Have bought and sold a few, but nothing stuck. Currently I am settling on the Aeon Flow C, but still hoping for better alternatives. From what I read, the HD820 is not for me. Audeze XC? Mwah, don't like the Audeze sound, plus way too heavy. Sony Z1R? I owned it for a year, but ultimately sold it. Too much of a specialty can for the rather high price. Tonally unbalanced, veiled.
Other contenders? Massdrop Ether CX looks interesting and then also the Elegia. Just don't compare them to open backs.....