I also have a BL Unity in a large table my husband made for me, and I currently do all my quilting on it, but have no intention of quilting a queen or king size on it. I have the rulers and plan to learn to quilt with them on my Unity, but my goal is to purchase the BL Coronet. Have you looked at that yet? You may want to check it out before making a final decision. Good Luck, let us know what you decide!