The thing I didn't like about the Aeron is that the fabric seating base wasn't flat/wide/firm enough and the frame edges would roll my legs together. The Chadwick Chair has the same basic design, and looks like it would do the same thing.

I found that the Herman Miller Embody was a good choice for me, and a good value despite the stunning price on them. With their 12-year warranty, it came out to about 28 cents a day. Three years into it and the fabric still looks good, and cat hair is easy to remove (always a plus).