In a few days I'll be the proud owner of a Steelcase Leap. This is my first proper office chair in my life. I've been sitting in plastic garden chairs so far. Hopefully I will be satisfied and don't have to send it back to get a Herman Miller instead.
I looked at the Aeron, but people said the seating isn't for everyone (mesh for one and the way it can press on your thighs or whatever) also according to the internet the aeron "punishses you for not sitting properly" and I kind of want to sit not properly here and there