I have used most of the Rubi range and yes they are good. I was pure Rubi and wouldn't have it any other way. You could tell me until you were blue in the face there are better cutters on the market I wouldn't have it. Then you get to try a few more cutters, Battipav, Tomy, Ray's and then Sigma. It cut everything I put it's way without fault and with no pressure. The cut was bang on every time and it cost less than what I had. Rubi are top a tree no doubt but Sigma are catching on fast and I have to say when you spend a few pounds on a cutter it better last a long time and do what it's meant to do. So now I have had a play with most cutters on the market and the Sigma beats them all on quality and price.