Hi, we have purchased Nan Gold for my son in th...

Hi, we have purchased Nan Gold for my son in the past and he seemed to be getting full and sleeping well but having toilet pains...not that he was constipated, just he seemed to be getting tummy aches from it right before a poo and then was unsettled after going to the toilet. However today we purchased Nan formula, the texture much thinner and the scoop a little bigger...however he drank more formula than he ever has previously and it took a little while longer for him to settle... So my question is....besides the fact Nan Gold contains omega 3 what is the other differences that makes this formula considered 'better'? And what experiences have you found with the gold verse the normal formula...we just want the best formula for our son. Thanks heaps guys, I am very interested in this. Cheers Em