I bought 3 packages of HF blades this weekend ($1.50 ea package for 2 blades) after hearing everyone say they worked. Well I tried 3 of them and they have all been very bad. I don't know if I just got a bad batch or what. I had to cut 3 and 4 times and then my squares were very stringy. :( I was very disapointed but I still have one more package to try.