In my sewing room I've always used armless chairs at my machines. I have an antique Singer w/it's own bench. The padded bench is comfortable & has storage, but no rollers & not adjustable for height - tho has always worked well for me. The last chair I actually bought for my newer sewing machine table is an adjustable, rolling doctor's stool. I can sit in one space, roll in & out under my machine, turn myself around for the ironing table, sewing supplies, push myself across the room - whatever, & it's easy to adjust the height. Love it & picked it up relatively inexpensively at one of those large office supply stores. It works quite well as a second chair across from my office desk when I'm sharing desk space also.