we need more info about your weight ski style, where you ski. but the skis are pretty much opposites. anthem being fatter playful and buttery whereas the s4 is stiff and thinner.
I weigh 170. Im fairly knew at park. I can huck some 5s and such and am getting better at rails and boxes. I wanted a ski that could help me get better lol
Skis don't help you getter. Yes there are different skis made for different styles of skiing, but only you can help you get better. If you're riding on the east i'd say get anthems. haven't heard much on the s4, i think it's a stiffer ski though.