Similac Alimentum Hypoallergenic Formula Review

One of my twin daughters constantly spits up. Her Pediatrician switched us from formula to formula to formula and finally switched us to this. We have come to the conclusion that she is going to spit up no matter what. It didn't stop her gas problems and it seemed like she was hungry right after she finished eating. She usually eats 6 ounces and is quite happy but not with this stuff. It doesn't seem to fill her up at all and she still spits up anyway! We just decided to give her formula that makes her full. At least she isn't upset.