I used to be a butcher so I just stick with what I know. I use three cheap dexter knives. A 6" boning knife, a 8" butcher knife and a second butcher knife that I modified. I took a 8" butcher knife that was pretty well worn and cut it down to about 3.5". I ground the rough edges round and sharpened the she-ot out of it. It is by far, the best thing I have ever used for tearing through pelvic bone and especially ribs.