There’s just one problem with Grado: they don’t make a product most people would want to use. Some friends of mine have, over the years, bought them at the recommendation of audiophile friends, but stopped using them after not too long. I’ve tried them out and just wasn’t impressed.
Being a live-sound mix person (at least until the shit hit the fan), I've got quite the collection of headphones: the usual 7506, Sennheiser HD280, Pioneer HD-5 that I bought at the venue because I left the 280s at home, AT M40x, Grado SR125e.
I think the Grados sound the best. I can't use them for live cuing because they're not closed-back. And they get too uncomfortable to wear after a short time, as they press against your head to stay in place and the foam isn't all that thick.
The 7506 is fine, they're comfortable, they can take some SPL, and at $100 a pair, they're great. My wife uses them for her online stuff, although now I think she just uses the AirPods.
The Pioneers are fine for live cuing -- they don't fart out on kick drum and they have good isolation and can get loud. They don't fold up as nicely as the 7506 and I'm afraid they'll get broken in my backpack. The cable is not captive, which I like, but I think the connector is kinda crappy compared with the AT.
The 280s are darker sounding than the 7506 and they don't like loud PFL on kick drum. They're comfortable to wear and my kid uses them for online classes.
I think the MTH-40x sound great and are the most comfortable of all of them. I haven't used them on a show because we haven't had any. They fold up nicely so they'll fit in the kit.
My basic rule for headphones: never pay more than about $125 for something that's basically a consumable.