Hi, C.!
Congrats on your new baby! Hope you are enjoying Mamahood! My Duncan is 14 months old and we are having so much fun. When Duncan was born, he nursed so well for 3 weeks and then, for reasons unknown, my supply dropped and he lost weight. We had to suppliment with formula and, even though with much effort I was able to bring my supply back up, he preferred the bottle and would only nurse once or twice a day and then by 4 months wouldn't nurse at all. Soooo...I had the same question you do - What formula should I use? Posed to the doctor, he said that they really all are about the same nutritionally and that Wegman's brand with Iron and DHA and ARA was just as good as the more expensive name brands. We compared the 2 and he was right. Now we have a healthy, bright and happy 14 month old who is 75th height for height and 60 for weight, LOVES music and takes a drumstick around the house experimenting with different sounds until he finds one that he likes, dances with his Mama and plays monster trucks, complete with engine sounds, with his Poppy.
I was so grateful for the doctor's advice. Our child is thriving and we saved, literally, thousands of dollars (the Wegman's brand was 1/2 the price of the name brands - $12.99 to the other's price of 24.99 for the same amount). If you don't have a Wegman's near you, take a canister to your pediatrician for his opinion or make the comparison yourself as they usually have the comparison information chart right on the lable and you will see that the differences are truly negligible.
A note on organics....I wish I could have afforded organic formula. It is MUCH more expensive than even the name brands. I made all Duncan's baby food from organic produce. Thankfully, Wegman's has a wonderful selection of organic produce at a reasonable price, as having had Duncan in March, I was much too busy as a new mama to put in my own organic garden last year. So, if finances are not an issue, I would recommend Earth's Best. I fed Duncan Earth's Best baby food if I ran out of our homemade or when we traveled.
I wish you the best and hope you find as much joy in mamahood as I have!
S.