I've been buying the Whole Foods 365 brand olive oil for some time now, but recently noticed there are 3 new varieties available: 100% Greek, Spanish, or Italian. According to their website, the cheaper un-designated olive oil is a mix of the three.
What the website did not say was what kind of flavor difference to expect amongst the three 100% ones. Has anyone tried them? All I could tell was that they were slightly different in color.