All depends on the mechanical. Nap spitfires are great. Crimson tallons are great as well as a host of others, but dont try a steal head. That was the worst by far. I always tell people to just go with a fixed head because if they pic the wrong mechanical, they will eventually have problems. And a lot of people tend to buy the cheaper ones for hogs, which are usually not the best. The very worst ive ever used are the spiral cut type. They simply are a piece of junk. If one wants to use a mechanical on hogs, keep the cut diameter small.