What best defines Led Zeppelin's mythic 1973-1975 stadium era?

Mythic Stadium Era (1973-1975) poll options

Mythic Stadium Era (1973-1975)

Led Zeppelin: Houses of the Holy to Physical Graffiti Era (1973-1975)

Led Zeppelin

• The swagger of live epics
• Their bold studio experimentation
• Peak chemistry between all four
• The larger-than-life mystique