@djycb with the Carbon V there is a difference from '18 to '19 in the core. The 2019 version features Skelecore. This technology reduces the mass of the core allowing the carbon and glass fibers of the ski to react more naturally. You still get some of the chop dampening properties of a PU core (as @MarkSAU mentioned) but you're taking a step toward the low-weight properties of a PVC core.