I use a chair purchased from my LQS. It is large, cushy, and on rollars. It does not have arms. I know it was pricey, but I inherited it from my late MIL, along with a beautiful Horn cabinet and a nice sewing machine. I do love the chair...much more comfortable than the straight desk chair I had been using. I do, however, wish I had the stool from my mother's sewing machine cabinet (my brother and his wife have it)...like a previous poster mentioned, it is backless and I remember having much better posture when I was sewing as I grew up as compared to now. My advice would be to check out the office supply places first and sit in several. You want one that will give your back good support and will allow you to adjust for height.