I second on the Lennox, typically I think they are worth the cost but..from time to time you can get carbon steel blades for about $6 each from MSC or Grainger. I bought a bunch last time and am very happy. The lennox does last longer not doubt but at $6 I can use up a few of these. Bottom line if buying the less expensive buy from a good source and get on sale, otherwise you cant go wrong with the lennox