I think it really depends on the size block that you normally make. I have all different sizes that I use from 1.5 to 8.5 then 16.5 (basically used for squaring up). Is the question for squaring up your blocks or cutting out? If I'm cutting out its the June Tailor Shape n cut hands down. I do have one favorite that I'd die if I lost, its y 1x6, this is the handiest little ruler I have.