Yeah I've had my Hero for a few years now, I'm 6ft 8 and about 30st at the moment and it's held up well. Bit battered but that comes from the cats using it as scratch post. The seat is initially very hard, it's loosens up abit over time but still holds its shape and support. At max height I can sit in it a few hours depending on what my busted leg is doing. Does get a bit sweaty in the heat though.
It's a good chair for the money with good adjustments. I'd like to get a Steelcase in the future, but if not I'd be happy with another hero!
@fiveub if you feel like donating a new one I'd gladly accept lol