I highly recommend the Spyderco Sharpmaker. I have been messing with knives for the last 20+ years. I have made them, re-ground them, and sharpened them on many different sharpeners and I have found nothing that works as good as the Sharpmaker. In my experience with the sharpmaker, the only advise I could give is to use only the flats of the triangle stones and not the edges; then the flats like they suggest. Take nice slow Controlled Strokes and you will get a superior edge. This is the Only Sharpener I use on my Chris Reeve Knife Collection. The fact that I trust this sharpener to sharpen my $300 - $500 knives should tell you alot about it. With this sharpener, I re-profiled my poorly factory ground $500 strider smf to a beautiful 20 degree edge. It took about 1 1/2 hours, but the results are amazing. Enjoy !!