That is quite a tricky question, most babies differ when it comes to formula, so you can't really say what formula will work best. When I went to get my little one formula, I basically stood an hour at the formula shelf, wonder what one will be okay for him. Reading everything. The people must have thought I was crazy. In the end I took lactogen and it was actually a good choice as it tends not to give to much cramps, but as said, all babies differ. There is the more expensive one as well, It begins with a S, but can't remember the name for the life of me. Maybe one of the other ladies will know what I'm talking about. That one I heard is just as good.