As is this recipe can be a little on the dry side and, as others have said, very good but not spectacular. I only made these as listed a couple of times and then I started playing with the recipe to make other kinds of muffins which all turned out spectacular. This is one of my favorite recipes to modify because it generally comes out well. Both times I have used whole wheat cake flour, and the whole wheat really seems to enhance the flavor, so I would suggest trying whole wheat instead of regular flour, and if you're not a big fan of berries, you could try adding golden raisins and walnuts.
Someone else mentioned a problem with tasting olive oil, but i did not have this problem. I use the lightest olive oil I can find in the store, or I use high heat safflower oil.