I have hand quilted
up to a king on my DM (once, was more than enough)
Brother Novelle 1500
I would use blue painters tape and tape sections, up to 6 sections; starting in the center, rolled up quilt thrown over my shoulder would quilt in the section up to the border. After all sections were done, I would add my binding and then go back and do the border. Worked for me, kept my quilt more square.
2 - 3 years ago purchased Handiquilter 16 mid arm.