Jonah Lomu or Julian Savea? You're going into the final selection meeting for the best All Blacks XV and have to choose between a hulking duo who terrorised opponents.
This is not about statistics. It comes down to gut feel and personal preference about two of the best who have ever worn the black No 11 jersey. It's also ignoring others like Bryan Williams, John Kirwan and Ron Jarden.
READ MORE: Jonah Lomu v Julian Savea
It's rugby's equivalent of separating golf's Old Tom Morris, Bobby Jones, Ben Hogan or Jack Nicklaus. Time, equipment and conditions all offer circumstances which cloud the comparisons.
Lomu was in his pomp 20 years ago when he rose from a ragged start and fitness issues to scatter defenders like tumbleweed across the fields of South Africa at the 1995 World Cup.