LittleIsland

I've just made Rose Levy Berenbaum's Chocolate Chiffon Cake and really like it - light, moist, and very nice texture. BUT I am in search of a more intense, rich, chocolatey flavour with a deeper colour in my chocolate chiffon cake. I have read other posts referring to the recipe from Spago's Chocolate... would that be the one to beat, or are there others out there that would fit the bill? Also in search of the perfect frosting but that's for another thread once I've found the right cake recipe!