The "one simple thing" you wanted Dr. Rubilar's "opinion on" might be very unwise (if not unethical) for him to express in writing, even here.
I don't think it would be prudent for an Argentine lawyer to publish (in any way that could become "public" knowledge) the names of the federal judges and secretaries who he thinks are good (implying the others are bad), especially when he has been, presently is, or in the future may be presenting cases in their courts.