I bought the small one, hadn't opened it and saw the large one, was so impressed I talked to the shop owner (she is also a member of my guild) and she let me swap it for the difference in price. I absolutely love it, and would buy again if something happens to it. Cuts are accurate, I don't use anything to keep it from slipping, just put my hand on the next slot from where I am cutting and have never had a problem. Cut 4, 6 and 8 layers all the time! Multiple stacks for 2 1/2" strips, so easy! Favorite product so far!