I own Focal Utopia and Sennheiser HD800, and have listened to them extensively,, probably more than a thousand hours of listening time. The Focals is very capable in bringing out the details and positioning of the instruments and vocals on the sound stage, although its stage is an intimate one, smaller than the HD800. The Focals really packed a punch when it comes to bass, more than my HD800s. The HD800s excel in larger sound stage, even more revealing than the Focals. Comfort wise, I prefer the HD800s over the Focals as they are signficantly lighter, have larger ear cups and lesser clamp force. The Focals have thicker ear cups and feel like they are enveloping my ears in a cushy couch.
Enter the Yamaha YH-5000SE. Long story short, these are simply the best headphones for me, bar none. I have listened to many high end headphones from Hifiman and Audeze before I landed with Focal Utopia and Sennheiser HD800. But man, these Yamaha headphones just simply tick all of the boxes, as if integrating all the good points of the Focals and Sennheisers and leaving out all their weaknesses. The Yamahas are extremely well built and robust. I have to change out my HD800s' ear pads becauase they started peeling. The headband started getting all sticky, probably due to humid weather where I live. The Focal Utopia's right earcup fail me 3 times!!! 3 times!!! The Beryllium driver was fried and no sound after a while, and each time I have to send in for repair, which took a few weeks. The Yamahas' leather was high quality as no degradation from hours of listening. The built is rock solid, yet miraculously light, even though some may say it looks weird. Trust me, once you hold them in your hand, you immediately can feel it is light but somehow it just feels extremely well built, the type that gives you great confidence of its built, compared to my Focals and Sennheisers. By the way, my Focals actually creak every time I move them or adjust them. I guess it's the extreme attention to details by the Yamaha engineers that made the difference.
The Yamahas' sound is: detailed, transparent, big sound stage, accurate positioning of the instruments in front of you, with solid, accurate deep bass, no bass bleeding; nimble and fast rendition of whatever genre of music you throw at it. Its treble can bring out all the details of the high notes. All these qualities are delivered to you in a coherent and natural way, that focuses your attention on the content and soul of the music, rather than its technicalities. This, to me, is unparalleled.