Originally Posted by BRIAN34
The katera is the 2008 model and has the new z3 cams.real fast and smooth, really like the draw cycle. The vectrix is the 2007 model real good shooting bow also. both are nice bows..will not go wrong with either bow..
I am pretty sure they now make a Vectrix plus which is 2008 model with the z3 cam. Like Brian said both are shooters.