My favorite is Olfa...the ones I have had have lasted many years. I also have a June Tailor mat that isn't as "self healing" as the Olfa ones. My rotating mat is by Fiskars (I couldn't afford the large Olfa rotating and the small was too small). The Fiskars is 14" I think. It was a good price and I figured if the mat part needed replacing, I'd glue an Olfa to it. But it's not showing any signs of wear and I've had it a few years.