Mel, I know you had a lot of success with goats' milk formula. I do have to comment though that goats milk is actually quite different in composition to human milk (despite popular belief) and many paediatricians and paediatric dieticians strongly recommend against it's use for infants. At a Health Professionals' seminar recently there was a lot of information about it. I would be inclined to try different cows' milk formulas first, and seek medical advice before trying other options.
Really? Wow! I got that information (re it being closer to breastmilk composition that cows milk formula) from a naturopath on the sunshine coast. But then, she did think that nobody should be drinking cows milk in the first place. We just went that direction after trying 5 different cows milk formula, then soy - so goats milk was the only option available to us.