Neither, halos have ZERO tortional strength, a wonky sidecut, and basicaly feel dead. Epic planks have inconisitent quality/durability, nothing new with newer companies. If you want a rockered park ski check out Filthy Riches or Moment Vices.
The vaporizers got a little tweak this year. They moved to a little less rocker , from about 39cm of rocker to 29cm. Also stepped up to a more jib friendly urethane sidewall instead of uhmw. Durability on the new sidewalls has been great, on top of the fact epic stands behind what they sell. Big difference for you is are you looking for 93 or 82 underfoot? If you are using them as your go to ski for every condition the 93 will be more versatile, the rocker makes both skis feel wider in soft snow.