Thanks for the discussion, people.
Alex, I've also tried a bottle of the Whole Check 365, and it's fine, but nothing to write home about I think.
rnatalli, I will keep my eyes out for DeCecco.
MTB, it totally skipped my mind to try the boutique shops. The first that comes to mind is this excellent French restaurant (with a very cool owner/cook), that has a walk-in cheese/wine store on the premises. I think I understand what you're saying about only splurging for finishing oil, but I tell you sometimes it can still make quite a difference when cooked/sauteed/etc, at least in my impressions.
Ok, so I guess it's easy to find run of the mill cooking EVOO, so I should have just asked only for the very flavorful.
Rickster, I've got to try some of that Costco/Kirkland oil, and I didn't know that existed. Kirkland food stuff always seems to be of very high value, or at least their booze is, haha.
The most flavorful oil I ever had was sort of like a "Costco-type" of thing in Europe, where I just bought a large value-oriented bottle. It was amazing though. It was made in Spain, where I read later in an interesting National Geographic article that they produce more any other country (and I just confirmed with a Wiki search now). Now, I haven't really looked since those many years ago, but I still haven't had any olive oil that tasted as good IMO. I will also keep my eyes for the Goya now too.
Chu Gai, I want to try some kalamata oil, have any particular bottles to recommend? I do have grapeseed oil, but I use it extremely rarely, which is a shame as the shelf life is a lot shorter I believe.