Yet another new player to enter the market from some old friends...

I've spent some time testing the various HM chairs. I actually don't think the Aeron is the one for me. The lumbar support feels like a knife in the back. Next weekend when I make the purchase, I'll either get the simpler, firm-backed Mirra; the high-back, rest-your-head Liberty; or even the super simple Chadwick. If only a store had an Aeron with Posture Fit that I could try.

I have the posture fit on my Aeron. Much better than the old lumbar football. I vary its position day to day or sometimes multiple times a day. The Mirra looks decent, but so does Humanscale's Freedom. If I had to swap the Aeron for a different product, it would probably be the Freedom with the high back.

Some ofthe problems I have with all chairs is simply training myself to sit properly, so any help the chair can offer me in that regard is a big help. After long periods I find I end up shifting around so that I'm not fully making use of what the chair has to offer in the comfort and ergonomics department. At the same time probably not doing my back any favours. Because of this I value being able to make a lot of adjustments to the seating so I can vary posture and tweak things for both different tasks and different times of day (depending on how slouchy I find mysef becoming). If you work in a home office as I do, don't underestimate the importance of wearing shoes. It makes sitting in any chair potentially a lot more comfortable because when you put your feet on the ground they won't slowly slide out away from you (if you have a tendancy to do that sort of thing).

Bruno

The Chadwick chair for Knoll was great at training you to sit properly. It has essentially no adjustments. Simply sit as far back into it as you can, and it does the posture work for you. And at a lower cost than the others, I may just walk away with that.

I wouldn't be so worried about slouching. Wasn't there a recent report (like, last month?) that found "sitting up straight" was actually quite poor for one's back, and a recllned slouch position was much better?

Or something like that.

Cheers