I have the cutters both 45mm and 60mm and the 6 1/2 by 24 1/2 ruler. I love these my cuts are so accurate and your fingers are safer because the cutter runs along the guides on the rulers. In the UK we don't have as many of the different manufacturers you have in US and I can't compare with some of rulers I have seen you guys discuss on the board but I have to say I really like these.