Hi there,
While this music genre isn’t my personal cup of tea, the Stellia’s Beryllium drivers are faster than the Magnesium-based ones in the Elear (or Clear).
When I play music with fast/hard beats (Foo Fighters, Rage Against the Machine, etc.) it responds really well- but it also depends a lot on your amplifier and source. Music like the metal example you shared can be really limited (muddied beats, less punch to the bass) by those components as well.
It also depends on what you are looking for in metal genre sound reproduction/sound signature (forgive my ignorance if it’s an obvious thing among metal fans)- deep bass vs. fast/clear mids vs. fast bass vs. super-clear treble, for example.
The Stellia isn’t a bass head’s dream headphone- it goes deep and does so fast and with punch, but isn’t bass-heavy per se. This vs. the Focal Radiance, which has warmer tuning and more prominent mid-bass in particular- and from what I’ve read, Fostex has models (TH-900?) that reproduce bass exceptionally well).
Nor is it the fastest headphones either, as planars are pretty unbeatable in that regard- but might be too bright to be enjoyable with metal… I wanted to love the Audeze LCD-XC, but it was too detailed to be enjoyable to me.
However, the appeal of the Stellia for many listeners is that it does most things/reproduce most musical genres really, really well. If your goal is to surpass the Elear in speed, detail/clarity and dynamics- yes, the Stellia will do that (I’ve owned both). Is it the best if metal is the genre you listen to all the time?
I don’t know- but it will sound really good when playing it.