this thread made me laugh! Years ago, I was using an old old office chair that my now ex BIL found on his garbage truck route. worked prettygood, looked horrible and had metal wheels. So i went to an office supply store and tried out several and got one with adjustable height no arms. Worked great for a long time but now it doesn't stay locked in to the height I set it at. I start out 'above' the machine and end up looking up at the machine. I rolled over the computer chair and love it, but it has arms that love to hold on to quilts!