Second handed Aeron. Also, no matter how good the chair is, you'll need to take breaks, get up and walk around every now and then. We're animals that require mo

Second handed Aeron. Also, no matter how good the chair is, you'll need to take breaks, get up and walk around every now and then. We're animals that require motion. Our bodies have simply not evolved to be sitting for long periods of time. Finally, your chair is not the only component in being comfortable. I recently discovered that my knee pain was because my setup wasn't fined-tuned to my height. This website[1] helped me to tweak my setup and now the knee pain is gone. [1]: http://www.computingcomfort.org/create2.asp http://www.computingcomfort.org/create2.asp