I prefer the Kellyco Gator Razor Edge digger myself. It is narrower than the sawtooth digger and serrated on both sides, but does need to be sharpened when new. Being narrower it is easier to make smaller diameter holes which is in my opinion a paramount consideration in not messing up lawns, parks, schoolyards, etc. Many here use the Lesche digger but I like the Gator Razor Edge a whole lot better. Lifetime warranty and built really strong.