I am in Winnipeg and by far my two best producers were Nugget (1st) and Cascade (2nd). The Nuggets were grown from plant plugs and took an extra year to get established, but when they did they took off like mad.
Had to tear out my hops this year, and the tap root on the Nugget plant was almost 3 inches in diameter, and that was about 2 feet underground, really surprised me at that, I was expecting a big web of roots, not a giant taproot.