I ended up getting the chair from bad backs. I got an email 2 days after purchase to say it was sent. A week later no chair. I called them up and they said it was sitting at the depot. Was delivered but no-one was there to receive it apparently (not true as there's ALWAYS someone at work during working hours). No slip was left either.
Anyways they sent it out the next day and when the chair got to the office it literally fell out of the box onto the ground as the courier was lifting the box out of the truck.
It was a pain to put together too. A LOT of screws, shitty instructions as well but hey, the chair is great and it's got so many adjustments on it. It only took me about 10 minutes to dial it in. Still love my Aeron at home more, but I dare say this little chair is probably better for my posture.
my heel accidentally hit the hydraulic chair fast descent lever crushing my foot. stoopidest feeling in the world. marginally worse than when your pushing the back of a pen into your teeth and it slips and smashes your gum.