I think the quality of the snakes in question is a better determination than the line itself. Most people like the VPI best and a lot of people have VPI. However I have seen some absolutely fabulous SK axanthics from JD Constriction. I have a couple of SK axanthics now, and though they aren't the greatest, they aren't all together bad either. My male is better than my female. I'm hoping to add an SK axanthic from JD Constriction some day in the future.