It's rather unlikely that the Cascade died. Of those four, the Hallertau is the most difficult to grow, but every garden is different.
Magnum is a good choice. It's high alpha, but it's real name is Hallertau Magnum and the aroma is in the family.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk