I have been trying to decide which one to get. I am big on vocals, impactful bass, treble, detail imaging and retrieval, layering and tonality, also sounding natural. I mainly listen to Pop music, and sometimes EDM.
Both will fit your description of what you’re looking for, with varying degrees of tweaking. IMO you need to first decide if you need/want an open or closed headphone. I think the X will be a closer match to your stated preferences in its stock tuning, but the XC is utterly amazing with a bit of EQ, and a Schiit Loki Mini is all you need to really make that one sing.
Neither, they both require EQ
Get XC…it can be both closed and opened back.