[chiefgeek]

I used Aerons for several years back when they first came out. While they are really nice looking, I and my staff found them to be terribly uncomfortable. We all went and tested multiple chairs at the Merchandise Mart. The Steelcase Leap was the clear winner. I still have and use several of them almost 20 years later.

The Aeron has two major flaws, IMHO. It looks like the Cosm may have the same.

1.) Arms that recline with the back which causes your wrists to have to break to reach the keyboard

2.) The "trampoline" design of the seat means the front edge of the chair digs into the underside of your thighs.

[uptown]

2.) The "trampoline" design of the seat means the front edge of the chair digs into the underside of your thighs.

This was the dealbreaker for me. I tried one, but just never found it comfortable no matter what adjustments I made. Instead, I switched to the Humanscale Freedom. While it lacks extensive adjustments that many find essential, it's been a great chair that has held up very well. In the few instances where parts have worn due to age and use, the company has stood behind the product and shipped me replacement parts with no questions asked.

[ghaff]

I think there are mesh people and seat cushion people. I have an Aeron at home and we had Leaps in the conference room at a previous employer. The Leaps are fine but I much prefer the Aeron. For one thing, I find it much cooler in hot weather.