Bests & Worsts Reviews from Amazon

Needing to replace my old desk chair -- and acknowledging my advancing years -- I decided to find out what was the least expensive chair to offer blissful, sit-all-day comfort. After plopping down on every name ergonomic chair you've ever heard of (Leap, Freedom, etc.), I pronounced the Mirra the clear winner. (The Aeron is remarkably comfortable too, but more expensive.) I bought a loaded Mirra and have been very satisfied, with one little quibble for which I have deducted a star. That is, the two screws holding the chair's back to the base worked themselves loose after a few months of use. I consider this unacceptable in a $700 chair and caution all purchasers not to throw out the hex wrench Herman Miller gives you to tighten the screws. I have now tried applying some Threadlocker Blue liquid to the screws and hope this will solve the problem. I also think Herman Miller shouldn't charge a $150 premium over the basic model for the privilege of adjustable lumbar support.