Best Starch for 100% Cotton Shirts

What is the best starch to use on my husband's 100% cotton shirts?

Since I don't have a job currently and the closest dry cleaners was turning out sub par shirts ( in my husband's opinion), I have started ironing his shirts. In this endeavor has lead my on a search for the best spray starch.

I've tried several of the Faultless products, Faultless Starch, Faultless Premium Starch, Faultless Professional. I definitely did not like the professional kind, although I did not have to worry with the white flakes, but it was not a heavy starch and was definitely not worth the few extra cents for me.

Now I am starting on the Niagara products. Today I used the heavy professional finish. I like the weight of the starch but I seemed to have a bit more trouble with the white flaking.

Let me know if you have any suggestions. My mother recommended I use the cold water starch and go back to the yesteryear's!!