Yeah, honestly, no regrets selling my RS1x. It was a bit of a rollercoaster, on some albums, they sounded like $2000 headphones, but on others, it felt more like a $100 pair. Luckily, snagged a used GH1 lately, and it's miles better for my taste. Huge Grado fan, but with the GH1, I'm not itching to grab another Grado down the road.
The SR325x and the RS2x, to some extent, almost come off as basshead headphones when compared to the RS1x, lol. I know I might get tomatoes thrown at me, but I swear my RS1x had zero bass, even after 200-300 hours of burn-in.