I pondered for 3 months before deciding on the Wicked Edge, http://www.wickededgeusa.com/ and it is sooo easy to use. I have it permanently setup and can simply clamp in a knife, set it to factory or personal angle settings and away you go. There are very good You Tube videos too and the service is outstanding.
It looks like a very nice system. How do the stones stay on the guide rods? Is there some sort of 'stop' to keep them from sliding all the way off when you're using them, or do you just need to be careful?
Stitchawl