Replying to Need some help with spk boot and new skis

So I currently have the old purple, yellow, and zebra hot doggers with incredibly packed out liners and was wondering if it would be more beneficial to buy new liners(cheaper) or get spks. The rubber toe and the sheer comfort that spks offer intrigues me but I don't know too much about it. Also my skis are basically rockered now from the amount of time I've used them so I need a new ski. I ski about 90% park and I just want a light, poppy, stiff ski. Thanks