With our first child we used Enfamil A.R.  When our second child had reflux we tried Similac instead.  The Similac sensitive was among the first we experimented with and we quickly determined it to be a winner!!!!!  We consistently used the Similac Sensitive R.S. (R.S. means rice starch which simply helps thicken the formula in baby's belly to avoid being spit back up.)  Not only did we like what the formula did for reflux, we like what the company had to offer.  Similac coupons or checks, what have you, were always arriving after we registered online!  I love a good deal.  I almost never...