I think you have to go try some out. I am using a bar stool now. Before that it was a beat up old office desk chair that was probably 40 years old and did not serve me well. The bar stool is way better, especially with the MyPillow stadium cushion on it. But I have a very tight work-at-home office (under the basement stairs!). You probably have a normal office, so should go to Office Depot or other office store and start trying out chairs, take your time to sit in them for a while to see if they feel right and give you the needed support. Also if they are adjustable and reasonably solidly constructed. Hopefully you can find one not made in China.
