RE: Favorite brands of extra-virgin olive oil
I've used dozens of different labels over the years, some great, some indifferent. But my favorite - and it's for sure not an all-purpose evo - is Madre Sicilia. Very heavy, slightly pungent. And it's probably worth noting that it goes very well with Sicilian food, amazingly enough.
Tasting olive oils is like tasting wines. You can do vertical tastings, and blind tastings, and come away with some interesting ideas. A perfectly valid enterprise. But olive oil, like wine, is meant to be consumed with food, and, more often than not, with food from the same area. A delicate oil from the French Riviera wouldn't work, for me, with hearty Sicilian or Greek or Mexican food, full of garlic and possibly chiles, and oils from those countries might easily overwhelm the more subtle flavors of French or Northern Italian food.