The only one sold with the "SpyderEdge" is the Robin, but it's not really a full serration. For instance, the SpyderEdge Endura has a very small portion on the end of the blade that is plain edge, but the robin has, I'd say a good quarter of it's blade plain edge (which would equal about half an inch or so). So, the most serrated Byrd you could get would probably be the Robin, but if you're a serration nut, stick to normal Spyderco knives.