I daily drive a pair of Fidelio X2HR, but before those I had an Fidelio X2 that was coming apart of so much use.
The headband's rubber bands got stretched after only a few months (maybe defective) and the faux leather started peeling. The X2HR seem to be resisting the test of time much better.

But anyway, what I wanted to ask you guys is if there should be a big difference in sound response in both.
I'm not an audiophile, but at the time, I felt the X2HR didn't sound as "fun" as the X2.
I wonder if it was my brain just getting adapted to the change, but now, after a few years I dusted off my old X2 and plugged it in and they sound better to me. What gives?

Did you guys get the same experience when comparing the X2 vs X2HR?
I've read that their response curve is not that dramatically different from each other, but they sound quite different to me.
Does this mean I am picky with sound signatures? If so, what signature does this comparison mean I like the most?