I primarily buy Pompeian olive oil, and while I can't be 100% sure that it's pure, the taste is so perfect that I'd find it hard to believe it's not. However, they're one of the companies that was hit with that big class-action lawsuit, so who knows.
Bertolli, Carapelli, and Colavita I'd stay away from, since the oils I've bought from them were really bitter.
One thing to think about, though, is that canola, soybean, corn, etc. are only artificially cheap because they're subsidized in north america. I don't see why an italian company would be importing those oils only to export them again. At worst, they're just adding refined olive oil to the EVOO, which isn't a big deal unless it's rancid.
Last edited by Chaohinon; 09-14-2010 at 08:16 PM.
“The whole concept of a macronutrient, like that of a calorie, is determining our language game in such a way that the conversation is not making sense." - Dr. Kurt Harris