Since I've gone to the wheels, I have tossed all my other sharpeners (except my BOB carbide sharpener) into the garbage. Those wheels are hot doo-doo! But that's just me. I am lazy, and the idea of taking a beat up POS machete and being able to put a polished edge on it in less than two minutes that scared my pals was worth the investment. I can put any angle on it I want, and it's so easy, even a caveman can do it.