Tim
I've used a few knife sharpeners over the years, the all pretty much work on the same principal so what would make this sharpener better than most?
1) Size and ease of use.
It's tiny but its suction cup design makes it really easy to use. Place on counter, rotate handle down to suction lock to counter. Start sharpening.
Small is good, I don't need more stuff taking up counter space so having this be tiny and able to slip into the corner of a drawer is nice. It's small enough to tuck in your poc...