I cannot recommend a specific chair based on personal experience. But after considerable research I'm going for a Nightingale CXO. (I was initially attracted to the SteelCase Leap during the recent sale but numerous negative online user reviews wound up changing my mind.) At $900-$1100 it's a lot for a chair but unlike a lot of its competitors in that price range the CXO looks like it is built to last.
Unlike the Aeron Uber Chair the CXO has a breathable slightly padded backrest and memory foam in the seat. And while the Leap uses a hard-plastic insert for its lumbar support the CXO uses a padded contoured adjustable lumbar support.
Here are the names of three online retailers and the prices for the options I want: headrest, hardwood floor casters. I thought that I might want a different fabric than the stock "Matrix" but after receiving fabric swatches from Nightingale I think that Matrix is the best choice.
Seating Zone: $937. Hard-floor caster No fabric choice. Optional colors available in the Matrix fabric. The backrest remains black while the seat, headrest and lumbar support are a different color.
Healthy Back $960 Headrest No caster/fabric choice.
The Human Solution $1018 Fabric choice. Price match guarantee available…
Nightingale CXO Webpage:
http://www.nightingalechairs.com/cxo_home.htmlSmart Furniture will have the CXO in a couple of weeks; it's pricing will be comparable to The Human Solution. Be sure to carefully read each store's return policy as they are different... As of this writing the Seating Zone is the online retailer to beat.