My daughter was born in July of 07. I tried just about every formula because I was not able to breast feed. My daughter was fussy and spit up so much that when I took her for a check up the daughter told me I could not take her home.
I started using Similac R.S. because the formula was so much thicker. I have only positive things to say about the formula itself. I think the only thing I would complain about is that it is only available in liquid and doesn't keep very long in the refrigerator. It did however almost completely eliminate the fussiness and spit up.