Hi Mothers milk is best for babies upto 6 months of age. All babies must be adequately and exclusively breast fed till 6 months of age, unless there is some disorder which prohibits this in infant or mother. Mothers milk is usually sufficient for babies but if for some reasons mother is not producing adequate milk, there are various supplements like Shatavari available in the market which may help. Coming to your questions, most formulae available in market have same content, except few highly enriched formulas which your doctor will prescribe your child if they think there is a need of one. So any stage 1 formula will mostly have same benefit, except few changes. Nanpro 1 is good if your child is absolutely not being breastfed as it has probiotics.