i've tried both Grado/Alessandro headphones and listening to rock on the grado (or even alessandro if you prefer to have it not so forward) is always a bliss. that said, AT's coloration on mid/female vocals are a notch better than the americans. weight/comfort wise grado materials are either metal or solid plastic, which yes, more weight as opposed to AT's generally magnesium casing (at least for the mid range and above, though yeah more expensive)

i havent personally worn the grado/Alessandro for the length i've worn my AT AD900, so opinions are definitely going to be biased, however for time i get to auditioned with them, i still prefer the lesser head/hair contact 3D wing design by AT. albeit if you're not used to it or you're having "non-mainstream/standard" head shape/size, then the design maybe too tight or too loose for you.

that said, the wood modded (was it sr60?) grado that akabane has is imho the best bass reproduction headphones i've EVER heard. no matter it being bass quality, quantity, slam/depth, refinement/finease, everything. i've never heard bass so well done on a headphone as that grado.

the last time i've heard it at penang the driver was "loosened" from the intense "bass auditioning" (i am assuming that it's the most likely root cause) so i am not sure if akabane repaired the headphones or not. if he got it repaired and got the time to arrange and what not, i'd highly recommend bringing anything bassy and give it a go. either the govibe peak or ALO RX MK3 would be the best amp pairing. (havent experienced anything better, as from the top of my head almost every audiophile around LYN cant give a rat's ass about low frequencies/bass lulz oh and shoutout to sheenho's pro700mk2  )