Cores can change a ski a lot.
If all you have experienced is the Pro and you Kiki I would either:
Get the Pro
Or get a demo on another lesser model before you buy.
Hand Built here in USA May make a difference as well. The Lithium in 2016, which was referenced above and popular, was I believe built that way.
Your weight is also relevant as you may need stiffness. Core changes can affect stiffness, flex, rebound and weight is related to all three.