So, sometime in 2000 I bought a Humanscale Freedom Headrest task chair online for around $1300.
I have always and still do put in long sessions at the keyboard and this chair is amazing. But this is not a review of the chair itself.
In 2004 I went on a 2 year sabbatical in Asia and while liquidating I sold (pawned) my chair to a good friend.
When I got back my oversized buddy had put some extreme wear on the chair resulting in some breakage on the arms but in that the chair has a lifetime warrantee on hard parts I reclaimed the chair without concern.
I wrote down the serial number and headed down to the local Humanscale dearler, Copenhagen, talked to the office manager for around 5 minutes, left the serial number and in 2 weeks had brand new arm.
Cut to Oct 2010.
The chair, after 10 years of solid use, began to creak a bit and lube as I liked I could not quiet the chair. Very puzzling. The mystery was solved one night as I was reclining in the chair and BANG! I was lying almost horizontal.
The cast base had developed stress fractures, which were responsible for the creaks resulting from being slightly out of alignment. These fractures, on both sides of the base, had finally given way.
I emailed Humanscale with an RMA request and while the rep I ultimately connected with did not understand 'RMA' she eventually asked me to email some pictures of the chair.
2 days later I got an email requesting the serial number and a shipping address.
3 weeks later (today!) FedEx knocks on the door and drops off my new chair.
I cannot say enough about Humanscale's warrantee and customer service.
This chair is one of the best buying decisions I have ever made.