Nothing beats first-hand inspection of the All Blacks, certainly not for Six Nations coaches intent on getting their squads near that level of success.
Stuart Lancaster got the most intense view in June with England's test series, Joe Schmidt brought his Irish reconnaissance to fit in with a holiday and Welsh coach Warren Gatland is here until the end of August.
Bledisloe Cup tests next month will fill his focus as Wales host the All Blacks and Wallabies in November, along with Fiji and the Springboks.
"That will be a big campaign for us but I've always felt the only way for teams to get better is to play more of the good sides," he said.
Sometimes players were not put under enough heat or were not tested enough during the Six Nations but visits from the Southern Hemisphere gave coaches a much better measure.