RE: " I’ve found the Steel Case Leap V2 (version 2. The V1 is no good)"
@dreas, that’s your opinion. I have found the Leap V1 to be very good, indeed. I’ve owned three of them; just gave my first to my twin; sitting in second; have a leather v1 as backup.
Thanks to Steelcase chairs (the TOTL Criterion, then Leap v1s) I’ve been able to work many long days in home office for 25+ years, despite lower back issues.
I never tried a v2, mainly because I know a couple people who did and ended up not liking them.
I’m not saying a Steelcase Leap chair is good for the listening room. I personally prefer something w/at least a head rest. But they're damned good in an office environment...