I bought the Cutterpillar Pro not long ago. It cuts straight and I love the light. I had a Fiskars that I never had trouble with, I just got the Pro on a FB sale and the price was right. Its more heavy duty. Im sure I'll never need another. I have an old Carl that I use for thicker chipboard that if it breaks, not that big of a loss. I don't really know what to do with the old ones. They are on top of a wall cabinet for now.