AC made some of the best wheels ever IMO, however, these are not their top spec model. If the point is to get a better wheelset, you need to decide what that means and compare features, stuff like internal width, tubeless compatibility, weight, rim height and spoke type. Maybe you want faster hub engagement or some future-proofing with axle type changeability? Or maybe you want more stiffness and need to look at flange height and width and bracing angles.
We don’t even know which Ksyriums you’re looking at specifically so what can really be said here? I think
hose said it best upthread: it’s alwys good to have a second set of wheels. You can just get them then decide which pair you like best, or you can even mix and match…that’s kinda weird though.