Flood or Infection

I would have to go with Infection, because I like the way it played in Halo REACH. I mean Flood in Halo 4 was good, but I did not like how you became the flood and not just a generic Spartan. I think if 343 brought Flood back they should make it where the first flood is a carrier flood, like if the carrier got close to a Spartan the player would press the right trigger and the carrier would explode and kill and infect the nearby Spartan.