What's the difference between regular Similac advanced and NON-GMO
all gmo means is that they genetically modified the plants used in order to keep away pests or to produce a higher yeild. no chemicals are used in gmo products, but there is some DNA alteration. with non-gmo they use chemical pesticides and such.
I can't say yes or no because it's personal preference, really. I wouldn't care which one I used as long as my baby does well with it.