I like the Olfa ergonomic cutters. I have never tried another brand. I have never had one break, but hear that if they do, and you call them, they will replace it (lifetime guarantee I think). You can get them at a decent price with a coupon at Joann's or thru ebay. I like to watch for package deals that include several replacement blades. Last year I got a new cutter and 15 or 20 blades for under $20. You just have to watch for a deal.