Oroblanco is nice tasting, but Melogold is sweeter with no aftertaste when I did my own taste test here.
I took some photos to write up a post on my taste test but didn't get to it yet.
Here's a big Oroblanco fruit, but it was just puffy and the inside was not as big as the outside of the fruit. Most fruits on my tree are about 1-1/2 lbs normally. This tree is a good producer, what ever I graft onto this tree gets a lot of fruits.