Pros: Effectiveness, Overall Quality, Ease of Use
I like it a lot, but, not for the reasons you may think
I was in a store, and they had one of these on display. I happened to have a pocket knife with me, and I gave it a whirl. Low and behold, the edge was much sharper in seconds (it's a Buck, and those blades are pretty hard). Bought a couple, one for me, and one for a Christmas present. I then tried it on a Henkel paring knife. Again, a sharp edge. I have a Chefs Choice 120 that I use for my main kitchen knives, and I'll admit it gets them sharper. But, it's pretty useless on a 1-4 in blade. That's where this shines. I'm buying another for my nephew for Christmas, so he can keep his new knives sharp in spite of roommates.