From a Grado fan and someone who has actually listened to the SR60x and SR80x side by side, it’s the model. Go for the SR80x.

• Everyone assuming the Harman curve is the bible, and that any headphone that strays from it must be poor.
• Hype over high-end wired IEMs. Seriously, what’s the deal? There might be a legitimate use for them, but losing the cable is so worth it for anything requiring mobility. There are some outspoken people who lament the loss of the 3.5mm jack in phones, but good riddance. For home listening, an actual wired headphone is much better unless the headband will mess up your hair.