I have been using the Taylors Eye Witness Classic Chantry Knife Sharpener since about March 2009. If you aren't proficient with a professional sharpening steel, this is the very best option. Used FREQUENTLY it will keep your knives consistently very sharp. This tool is designed to be used the same as a professional butchers steel, and a butcher will sharpen his knives with a steel at the start of every job keeping the edge on the knife. Like a steel (which in effect this is) the Chantry Knife Sharpener does not remove metal from your knives, it corrects/trues up the edge keeping a keen cutting edge. If your knives are really dog rough blunt (shame on you), you will need to use something more drastic first like an oil or diamond stone or the AnySharp Global sharpener. However, before using the latter read my review on it as it will wear your knives out in no time. I used that hackers sharpener on a few knives first as a trial and have used the Chantry Knife Sharpener ever since making the AnySharp redundant. If I were to use the AnySharp as often as I do the Chantry Knife Sharpener, my knives would have disappeared by now.
What's great is that because one should run the knife through this sharpener a few strokes ever use, the knife remains constantly sharp. It is correct that it leaves a mini-serrated like edge, but that is to the sides of the blade rather than the tip of edge. As any engineer will knows, giving form to metal increases rigidity and in this application, increases durability of the cutting edge. This is for kitchen knives not medical scalpel blades, and so the slight effect of the mini-serrations (if you do notice them) tends to help the cutting process and on such as onions, tends to reduce slipping on the onion surface.
The first one I bought my parents loved so much, they got one, they use all the time, they are almost 90yrs. reflecting the ease of use. I have given a few as gifts and all are impressed and love the ease of use and result. Even a German friend had to concede that this sharpener was in his words "Superior" to his German counterpart.
Bottom line is, get your knives sharp, use the Chantry Knife Sharpener every time and you will always have very sharp knives that won't wear out.