I'm w/Shemjo! I did exactly that...kept going to office supply stores and sat in different chairs and our LQS had a deal on an ergo sewing chair. I can honestly tell you that there is no difference to me. Just pluck your back pockets like goldy and the 3 bears till you find the one that 'fits just right'...:)Look for the option of adjusting your height. That way if you go somewhere else w/that sewing machine, you can adjust your chair height too to match. Skeat