i would guess killzone 3 would be best with the move on the basis that killzone 2 was better than socom series , but seeing as socom has a new single player mode now , without playing them , no real judgements can be made
socom 4. The Move will need time to progress in the gaming world, not worth the money yet. Resistence is full of cheaters, Socom has always been a solid franchise although confrontation seemed a bit rushed.
i personally have always liked the socom games. i think they screwed it up on socom confrontation tho. so if its anything like socom confrontation i say killzone 3.