Follow-up question: Aeron or Mirra 2? I'm in the market for a new chair and Herman Miller seems like a solid brand. I was considering the Aeron but the Mirra seems interesting as well.
Do what I did: Find a store that carries Herman Miller (and others) and go in and spend an hour sitting in various chairs. Everyone's body is different and there's no substitute for personal experience.
Note that I said an hour. At least. You can't really tell how it's going to feel after an extended period from just sitting down for a minute. Bring a paper or two. :)
