I have Olfa and Fiskars and ???
The one I absolutely love is the Martelli that I bought at our Quilt, Sew, & Craft Show put on by Rusty Barn the end of January every year here in Phoenix. Mine is about 10 years old now and still going strong. The newer style is even better but the cost is kinda high for me right now. Martelli also makes the ergonomic rotary cutter which many of my friends love but it hard for me to use because I can't use my fingers well due to arthritis.
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