My default these days in Canada is Greek or Chilean olive oil. I've lived in Cyprus for almost half a year. I know what good olive oil tastes like, and yes, the grocer olive oil back home in Canada isn't as good, but it's way better than the local or even Italian stuff. It tastes like
real olive oil.
I don't know what is going on with Italian olive oil these days, and maybe I've just had a bad couple batches in a row, but it will take a long time for me to trust it again. It almost always tastes diluted with other oils to my pallet.