Here’s a somewhat insightful story:
The Ohalei Yosef, Reb Eliyahu Yosef Rivlin, became severely ill. The doctors couldn’t find a cure and eventually gave up and said there isn’t much time and his life is in danger. His sickness was such that in the Shulchan Aruch the Beis Yosef and the Rama argue about it if it happened to an animal. The Beis Yosef is Machshir and the Rama is Matrif.
Reb Eliyahu Yosef said: I’ve found for myself a Takana. I’ll travel to Eretz Yisroel where the Beis Yosef is the “Mara Diasra” and there the Halacha will be like him.
He set out at once for Eretz Yisroel where he lived for twenty years more.
-Sippurei Tzadikim