With a bit of experience from the first two Killzone games and all of Horizon: Zero Dawn, Horizon takes the win easily. Killzones looks bland, feels mediocre, simply isn't all that fun, and I don't like console shooters in general, whereas Horizon plays pretty well and actually has interesting lore/story. If the other Killzone games greatly improved the series or Forbidden West did something really, really bad for the series, I doubt my opinion can really change. Aside from the lore, I'm not even a huge Horizon fan, but at least Zero Dawn is a pretty good open world game.
Of course this is based on my limited experience and my bias against console shooters, but that's my two cents anyway.







