Best: Lost in the Echo. That shouldn't even be a question. This is Linkin Park distilled into a hell of an album opener. You want a definitive song? You got it. It helps that the opening synth has a bit of a Streets of Rage vibe to it.
Worst: Victimized, by far. I can enjoy a short punk song. I can enjoy spastic genre flipping. However, this song is just sloppy. The punk atmosphere is neutered by the two other tones the song has and it isn't nearly long enough for the changes to not be annoyingly jarring. Until it Breaks is able to settle into a mood before switching gears. This can't.