I went to Beverly Hills Chairs looking to buy a refurbished Herman Miller Aeron. I sat in the Ultra Plush Leather Executive while I was paying for my Aeron. After paying, I actually decided to switch from the Herman Miller Aeron to this chair. I really liked to feature of the tilt lock on the Aeron and had no idea it was possible to have on a leather chair. It is the function that allows you to sit locked in different positions. I am very happy with my purchase, don't get me wrong, its hard to beat a Herman Miller Aeron, but I did love their promotional price.