Seagate 100% Extra Virgin Olive Oil contains very high levels of Oleic Acid (11 grams per 14 gram serving), a monounsaturated fatty acid that can reduce the risk of heart disease. This benefit is so strong that the FDA, which normally prohibits any disease claim for any food or health food product, allows this statement on olive oil labels - “Limited and not conclusive scientific evidence suggests that eating 2 tablespoons (23 grams) of olive oil daily may reduce the risk of coronary heart disease due to the monounsaturated fat in olive oil.”
I think I am going to try the Kirkland organic oil. They did a test on it some years back and it was the only imported oil that meet extra virgin standards. I don’t know how much oleocanthal it has in it, but it comes from Italy where oleocanthal content is known to be high. California oil was generally low in content according to that paper I linked up thread. Seagate sounds good, but there is no external scrutiny that I could find.
http://www.oliveoilexcellence.com/wp-content/themes/shopperpress/thumbs/olive-oil-final-071410-.pdf