I like "un-flavored" cereals, usually hot oatmeal (no sugar or fruit, please! just milk and butter) or cold Grape Nuts.
On the very rare occasion for a special treat, I used to enjoy Rice Puffs with cream.
But, for the more conventional stuff, my daughter likes Honey Nut Cheerios, my son likes (gluten free) chocolate Chex, and my wife likes Cinnamon Life.