For whatever it's worth, Kashi makes a cereal called Cinnamon Harvest that tastes nearly identical. For comparison, per 100 grams:
Cinnamon Toast Crunch:
calories: 433
calories from fat: 105
total fat: 12 grams, 18%
saturated fat: 2 grams, 8%
sodium: 700 mg, 29%
fiber: 3 grams
sugar: 33 grams
protein: 3 grams
Kashi Cinnamon Harvest:
calories: 375
calories from fat: 18
total fat: 2 grams, 3%
saturated fat: none
sodium: none
fiber: 10 grams
sugar: 17 grams
protein: 8 grams
Hopefully that makes it easy to see that Kashi is a much better choice, even though it tastes very similar. Cinnamon Toast Crunch has over 5 times the calories from fat, has 6 times the total fat, has sodium and saturated fat, less than 1/3 of fiber, twice the sugar, and nearly 1/3 of the protein. I'll take my Kashi.