Heh, Aquarian has the strongest taste out of the flakes that I've tried...
Well strongest smell, too. Otherwise I've tried old, old Wardley flakes and TetraMin... nothing too bad. When I fill up pillboxes for easy portions of food (my mum takes care of my tanks during the week while I'm at college, so I make it easy for her), my cats always stalk me until i give them a small handful.
Now... who's tried freeze-dried worms?