I think the Edge Pro is better by an order of magnitude (as is the Wicked Edge). Soooo many knives come from the factory with an edge over 20 degrees per side and the Sharpmaker is virtually unable to deal with them (unless you're extremely patient and then some). The EP can be quickly adjusted to their angle. Most fans of the Sharpmaker seem to be using it to do touchups to knives that were set up with EP, WEPS, or freehand to lower angles.
Good sharpening,
Dave
Good sharpening,
Dave