There are a couple other branRAB that are very good, too, for "people like us.

" [removed] makes office chairs that are well-designed and I personally find them more comfortable than [removed] The feature that makes these chairs worth the price is that almost all parts of the chair are adjustable...height, width, forward, backward...you name it, you can make it fit your body. I think one of the chairs that is sold at one of those "stores that sells products for your back" even has a cut-out area where th seat meets the back of the chair that keeps the pressure off that SI joint area.
My husband had a very good ergonomic office chair that he felt was comfortable, but then he switched to an [removed] and absolutely swears by it. He keeps bugging me to get one for my desk at home...but, so far, I haven't wanted to spend the money and am using his "Old" chair...the pre-Aeron one.
Can't answer you about which model. You need to try them out and see which one fits your body best.
I bought one of those [removed] seat cushions, again from one of those back stores. They are a bit pricey, but they custom bend them to fit your exact spinal curves. They are portable and I carry mine from place to place. They fit into any chair and make an uncomfortable one ergonomically suitable. You can move it from the car to the house, etc. Some are only a seat cushion but mine has a back and a seat cushion. It has the cut-out area for the coccyx.
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