I find the Worksharp a good tool for restoring a blade that has had serious neglect in the past, or would benefit from a reprofiled edge - though as others have said, if a blade is looked after and just needs touching up, a Worksharp isn't needed and is a bit too "hungry"
I bought a work sharp hand held model, works good for me, and I suck a shaprpening. Has a fine diamond stone on one side, corse, rod type sharpener, and leather strop.works for me