Who has the BEST tacos al pastor in Zihua?

Agree, Los Braseros or La Papa Loca, probably in that order.

Unfortunately, we don't have in Z/I a tacos al pastor place like El TIzoncito or El Califa, my personal favorites.

If you are cooking, I recommend you try making al pastor fish. Buy Achiote at the grocery store or the mercado, mix it with orange juice and out on top of fish and bake - if you like to add some pineapple you can do that too. Once done, add onion, cilantro, lime and some salsa.