I just got a sharpmaker a few weeks ago. It works better than anything else I have tried. I did not get the diamond stones, yet anyway. I did order the extra fine ceramics and like the results of following the supplied directions. Unfortunatly, my old VCR ate the tape that came with the sharpmaker before I got to see it! May have given me some tips! Under $50 and easy to get a sharp edge. Try it, you'll like it:)