You have got to try Nature's Path Optimum cereal. It's organic, no HFCS, at least 6 grams of fibre per cup, often more, full of protein. It is the best cereal I have ever had. I particularly recommend the Blueberry Flax and the Banana Recovery cereal that just came out.
http://www.naturespath.com/products/optimum__1
Other than that, I also love the Kashi Go Lean Crunch.