The pediatrician will be able to help you with that... my daughter was on Enfamil Newborn until I gave her Enfamil Infant... I first tried Similac Advantage and she couldnt tolerate it-- threw up everywhere... there were times when she had a sensitive stomach for a week or 2 and the doctor gave me a sample of Enfamil ProSobe (the soy one) and Enfamil Gentlease... but she did well on just the Enfamil Infant the majority of the time (WIC really saved us)... we moved to AZ when she was 7 months and they didnt have a contract with Enfamil, only Similac, so we had to switch and when we tried it the 2nd time she did fine
Similac advance and Enfamil Infant are both good too. With formula it might be a hit or miss for a little since some babies tolerate it very well right off the bat and others require some trial and error. All these companies also make formula for supplementing which is designed to be super close to breast milk to make it easier on moms who need to supplement. You could try those as well.
Any other suggestions? Bump
Oh ok, there are so many different ones now, that it's hard to know which one to choose
Gerber Good Start Gentle. Its the one with the orange labeling. Its very easy on the tummy and its one of the cheaper ones.