I first tried the Swingline ClassicCut Ingento CL520m-1152 and the Premier original Green Board, Model PREW18, and returned them immediately, writing reviews at amazon with the reason for my returns. Then I got this one, thank goodness! It is solid, it is attractive, and it cuts very accurately. I hastily cut the four sides of a new piece of paper, and the the square was perfectly true. The safety lock is on the side, not in the way, and can easily be put on with the same hand you are lowering the blade with. A previous X-Acto had very confusing lines, both inches and centimeters, on the grid, but this one is perfectly clear. The centimeter markings are at the top and bottom, with the inches in the middle. You do have to hold the blade toward the left if you are cutting more than a couple of sheets, but that is a common issue with paper cutters. All in all, I love it, and am so glad I persevered until I found a good one!!!