I bought the Martelli rings in both sizes. Keep in mind that I am the lblessed owner of a Gammill Longarm. I have MS so there are days when sit down quilting is a must. The Martelli rings are helpful when your design fits inside the circle! You can continuous line quilt that way but like stated earlier, a total pain to reposition but no more so than without it. I say whatever tool makes it easier and smoother for you is a winner!