I use my Janome Professional Memory Craft 6600. I quilt all sizes. My machine has a 9" harp space so that helps. My project now that I am waiting till I figure what I want to put on the back. It is 120" x 108. I know that is huge but I want to use it for a bedspread that covers the mattress and box spring. I know it will be a job since it is so big but I'll get it done. Also, being it is large I want to just use a thin polyester batting as that won't add as much weight. Wish me luck on this one.