I bought an Olfa 45mm rotary cutter, with the gold/orange and black squeeze handle and retractable blade. The Olfa cutters are the ones I see most quilters with. They cost about $17-20, but if you can get them for half price with a coupon at many craft chain stores. The blades need replacing after cutting a few quilts. BTW, I also use the green Olfa cutting mats.