Which Pink Floyd song performance in 'Live at Pompeii' (1972) was the most impactful?

Pompeii poll options

Pompeii

Pink Floyd: Live at Pompeii (1972)

Music

• 'Echoes'
• 'A Saucerful of Secrets'
• 'One of These Days'
• 'Careful with That Axe, Eugene'