My baby spit up more and more after his birth. We started out with Similac Sensitive but it became obvious that it wasn' working for him as time went on. We went as far as to try Alimentum formula as our doctor suggested but he still spit up like a volcana. Finally as a last resort we tried soy formula and we were so thrilled that it stayed down 100 times better. Once the free samples were gone we tried the Parent's Choice brand and it worked like a charm and actually blended better than the Similac Soy. I can't think of any cons for this formula.