I got one of those overpriced Herman Miller Aeron chairs at a bankruptcy (for 10% of the new price), removed the arm rests and am super happy with it, no more back pain since I got it and before it was unbearable. It takes a bit of work to set it up properly. This is the 'old' style before they made economy models, it is built like a tank and I fully expect it to outlive me, maybe one day the webbing will need to be replaced but after more than a decade of continuous use I can not see any wear at all other than on the caster surfaces. Keep an eye out for bankruptcy auctions near you and put in lowball offers, if you snag more than one you can always sell it on Ebay at a profit.