I believe in disposable seam rippers and I have a number of them scattered about in various locations, but it seems like never where I need it. Most currently are largish and have a blue handle probably Dritz? basic. I can't use those little tiny ones at all, they make my hands cramp up. Lately I've gotten a couple of the white handled Singers, they are about twice the price of the others but I like the handles. No opinions on how they last, only had for a year or two.