I sharpen my own knives with the Sharpmaker. I looked at the lanskie and some others, but I really like the sharpmaker. I have been collecting knives for awhile. When I first got my Sharpmaker, I watched the DVD, read the book that came with it. I then sharpened every knife I could find around the house. After I got the technique down, I started sharpening my co-workers knives (I'm a LEO, so finding knives to sharpen was not a problem). It's a good feeling when you hand a knife, that was dull, back to owner and they say "Wow!!", that's really sharp.
The versatillity of the Sharpmaker is awsome. You can sharpen every type of knife (PE or CE), and many different types of tools (from carbide tips, too screw drivers), and scissors. I would pick up the Diamond Rods, and the Ultra Fine Rods. Just remember with the Diamond Rods, don't use to much pressure. The diamonds can come off the rod. Also when you first get the Sharpmaker, use a sharpy on the edge of the knife you are sharpening. That way you will see if you are doing it correctly.
If the knife gets to dull and needs to be reprofiled, I would recommend get it professionally done. I know Spyderco and Benchmade offer resharpening, all u have to pay is the shipping.