The 25-year-old Cruden is the senior man with 32 tests, the 23-year-old Barrett has played 19 tests and the 26-year-old Slade has picked up 11 caps.
Cruden brings the sort of fast-twitch game which players like Frano Botica and Carlos Spencer had but could not repeat often enough (or else it did not fit into the pattern the All Black selectors wanted).
There is more sting about Cruden because his speed and eye for attack puts massive stress on defences and he has an array of options outside him. Some uncertainty hangs on his goal-kicking but his growing grasp on test rugby is impressive.
Barrett may be the best of the chasers, but it seems, like Ben Smith, he will need some time and fortune to leave that imprint.
The All Blacks do not have a mortgage on the five-eighths talent, certainly not this side of the equator.
The Wallabies are building depth, the Springboks have options and the Pumas offer more solidity in that area as they go in search of their first win in their third trip to the Rugby Championship.
The Wallabies have Bernard Foley, who directed the Waratahs to their Super 15 triumph, and he is a certainty to be given that test job when the side is revealed today. Foley has been composed throughout the season and has improved his goal-kicking as well to bring more substance to his claims.
The fallback men are Matt Toomua, Christian Leali'ifano and Kurtley Beale, who are being used by coach Ewen Mckenzie as second pivots in midfield but could run the backline too.
Springbok coach Heyneke Meyer has picked his most reliable kicker Morne Steyn in his squad and has also included impressive captain of the Junior Boks Handre Pollard and Patrick Lambie.
There is no room for Johan Goosen who looked to have a bright all-purpose game when he was injury- free, while the enigmatic Francois Steyn asked to be left out of the plans.
The Boks open their programme this weekend against the Pumas, who have Nicholas Sanchez, Santiago Gonzalez Iglesias and Juan Martin Hernandez who can operate at No10.
