After my girlfriend got me 1 a couple years ago, I don't see how I ever got by without it! With it I have to get the correct edge angle, same as with any kind or type, then sharpen. With the Work Sharp power sharpener it only takes about 1-2 minutes to do everything! The belts seem easy to change for me, not that I change them that often. It is EXTREMELY easy to round the tip off if you don't pay attention or read the instructions!