Pardon me for this wild topic. But since this is open talk... Also, I'm sure a lot of us sit in front of the computer doing photo touch up or something else for long hours every day and I've suffered long enough for a 4-year generic chair that used to be ok till one year ago.
Any leads? A friend recommends "Freedom Chair" from Humanscale. But I wonder if there're alternatives or better ones, especially from ones who can vouch from their personal experience.