There are plenty of alternatives to those items that are only barely worse. It is not worth the grind to get them. The amount of variance in your parses due to random luck will be much higher than the variance due to replacing those items with their alternatives.
If you take stabs at them periodically for fun or got them while leveling, cool. But anyone who actually just goes in there and grinds it out is exhibiting serious OCD-like addictive behavior and probably needs therapy.