In the past 7 months, we have replaced four chairs. The foam on one is wearing out, the legs of another are broken, and the mechanism of a different one is faulty. I'm at a loss for what to do. People might think I weigh around 100 kilograms but I actually weigh 72 kilograms. Anyway, does anyone have a recommendation for a nice chair that is affordable, comfortable for sitting, and won't cause discomfort?