There is a new office chair available at http://www.bizchair.com/gg-b078-silver.html. The thing that makes this one unique is that it is made of metal mesh, which provides a breathable and expandable seat and back. I especially like that the arms pivot, because I think this would only add to the chair's comfort. It also has lumbar support, the height adjusts, and it has dual wheel carpet casters. It's price isn't too bad either, and they offer free shipping.

It looks a lot more comfortable than the one I've been using, which is an old, badly stuffed wingback chair that has hardwood support in all the wrong places. The last true office chair I had broke twice because it did not adjust in height, and because the arms didn't swivel to accomodate my shifting to fit under the keyboard desk. Obviously, this one would accomplish exactly the needs I have for an office chair.