I am far from an expert knife sharpener. I bought the Ken Onion several years ago and it does a credible job for what little I know about knife sharpening but, to me, it is cumbersome because of needing to change sharpening bands in order to progress throughout the various sharpening stages. Then, 6 months ago, I bought the Chef's Choice 130. I LOVE it; it is simple to use, sharpens quickly, and delivers a better edge than what I've ever had.