So what's the verdict overall? With knife sharpeners there are a lot of options. My top electric pick was the Homly Professional Electric Knife Sharpener. It's pretty affordable, but it's hard to tell what's happening with the knife since it just makes one single noise. I prefer non-electric sharpeners however, since I like to know what's happening with the knife: you can hear it getting sharper. My top pick is is the Work Sharp Rolling Knife Sharpener. It's convenient, it's small, and it stores really well.