Picanha Steak or Sirloin Cap is more flavorful

This cut is far more flavorful than tenderloin.  It is considered the best taste in the Brazilian Churrascaria.

https://healthyrecipesblogs.com/picanha-steak/

If you have Sous Vide device, cook this with Sous Vide method then torches the surface or sears in very hot wrought iron pan for the final step.

Reddit Sous Vide forum has a lot of posts on how to cook it.