This is what I have. I had a Mirra, Aeron, and Steelcase Leap.
The Mirra was fine, nothing special.
The Aaron was horrible. Yes, I had it fit for the right size.
The Steelcase Leap and Embody are both top tier. You can almost argue the Leap is superior since you can get it in leather, making it easy to keep clean and free of stains and you can get it with a headrest.
They also make a Leap Lounge and it's sublime. I wouldn't mind the Herman Miller lounger though.
Either way, you can't go wrong. You have to find out what fits you best. Many rave and swear by the Aeron, but for me it was terrible and uncomfortable. The Embody and Steelcase Leap are sublime to me though.
