I went down to the Herman Miller store today to check out the Mirra and give the Aeron a second look. Based on some of the recommendations I received and other reviews I’d read, I was leaning towards the Mirra.
However, after some sitting around in the different models, it was pretty clear that the Aeron (size C – the largest size I believe) fit the length of my legs better than the Mirra did. Scott was right, getting the Aeron that fits makes a huge difference. I’d imagine that Mirra with the adjustable seat length is almost a perfect fit for anyone 5′ 10″ and shorter – it was just a little too “pushing me off the edge” compared to the Aeron.
I’ll have the new chair in about 5 weeks and will post a more thorough review once I’ve logged some quality arse time.