Nine years ago I bought a Bodybilt office chair similar to J3502 model but my doesn't have a headrest. I have more back pain lying in bed than sitting in my chair.
Warning! They can be pricey. I paid $1,700.00 for mine. I'd do it again in a nanosecond. The chairs are individually built. The computer guided setup takes two people about 45 minutes. Since then, I have not made a single change. When you get it setup, it's PERFECT, for you.
The chair came with a 100% money back satisfaction guarantee. After 30 days the President of the company calls you to see how things are going. The first words out of my mouth were, "You can't have it back." He said, "We get a lot of those responses."
WWG1WGA
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)
