To add my single opinion to this:
The leather Noble Hero is an excellent office chair, very well priced for a real high grade sheet leather chair - I'm not talking cheapo DFS "leather" sofas using composite scraps that rub away within 2 years - this is the real deal, high grade, thick sheets of real leather. For £570, I could not find a better real sheet leather "real" office chair with the Hero's function, I looked a long time as well.
Plenty of crappy scrap and comopsite "leather" office chairs around though. Usually the leather coating rubs away within a few years leaving a mesh bottom layer.
Been working on mine full time pre and post c19, almost 2 years old now; it's been absolutely great and looks brand new using the leather cleaning kit.
I consider it great value for money for such good quality leather and great chair functions.
Chairs are as much individual opinion and personal comfort needs, I thought the Logitech new £1500 looked good, but Jz2cents didn't like it, and after hearing his opinion, I don't think I would either as it lacks a headrest.
I personally highly recommend the real leather Hero's as being very good office chairs at a decent price as well.