Lol- I recently wrote a post asking the same thing. DD has been through a few formulas (Good Start Protect, Gentle and Soy, Similac Alimentum, Enfamil Nutramigen). We had her on Nutramigen for the past month. She had diarrhea EVERY single day, three times per day. It eventually caused diaper rash with sores, inconsolable crying, vomitting and sleeplessness. UGH!
Her ped told me to change to soy and recommended Good Start Soy. However, I remember trying that for 1 1/2 days almost 2 months ago and her stomach was a balloon with insane screaming. So my mom told me to go with Similac Isomil. So far, she is sleeping much better. We are on day 6 of Isomil. She poops everyday, though the poop is more formed. She smiles, is cooing and sleeping much much more. DH and the daycare both said she has improved tremendously.
I am just praying this lasts! I am so afraid that if the Isomil fails, what's next?? Her reflux seems to be bugging her though since she has been crying during her feedings. Either that or she is teething.
Let me know how you do if you choose soy, because so far I am glad I made this choice.