Having used most brands on the market this one was the best for me. You know, maybe it's the machine I'm using or a combination of things, but they work for me. They don't seem to stretch or heat up. The blade stays sharp longer than others I've used (significantly longer). Most blades are only good for a short time, they dull quickly, and if you cut thick wood regularly you'll need to buy 10-15 at a time or only have them delivered every few weeks. None of the ones I've used broke on my machine. I'm no expert, but in my workshop they work better and last longer.