I've been using a Greek oil that I buy from a guy at a local farmer's market (Eliki is the brand). I get that one because I tasted it at the stand and I really liked it. I've had other very good oils from Italy, France and California - I don't think the country of origin means all that much. You really need to find a good gourmet food store or other vendor where you can taste a few of the oils get the one that you like the best. There is variety of flavor among good oils, so tasting is the best way to find what you like.