comfort on most any on-ear HP is going to be no too great,so your concern is legit....pad durability is a non-issue though.The problem is that many HPs are quite V-shaped which doesnt lend itself to rock music IMO. For the price Grado is the best option for rock,the comfort is the price to pay.
Beyers are harsh in the treble area,to a painful degree.What i mean by too polite is the mids on Beyers do not convey the thick chunkiness that much of rock has in the guitar area....The sound is reproduced but lacks the aggression that Grado is known for.
My DAC/amp combo were not to blame,as the WA2 is one of the better OTL amps out there for taming the Beyer treble spikes.
I like rock guitar to have an edge,an aggressive,in your face presentation,which the Grado does pretty well,the 880 and X1 do not.
Bass on X1 is pretty strong,not SZ2000 strong but strong nonetheless.I like it for gaming as the bass gives explosions and gun fire a tactile realness,plus the soundstage is quite wide for figuring out positional cues of enemies.The bass overshadows that to a degree,but im not on the pro circuit competing in gaming tournaments either.If you want pure positional cues with minimal bass hinderance than you might look into some AKG models and/or HD800.
For music i like the X1 for trance,but as I said before the mids are too recessed for my liking,making guitars sound like theyre a few steps behind everything else....Understand this is my preference,and you might like the recessed v-shape X1.For gaming I love it.For rock music,not so much.