Anyone use plain Similac with Iron (not "Advance")?

If so...may I ask why? I know the difference is that the Advance has the DHA and RHA that is supposed to be closer to breast milk. But does it matter after a few months which one you use?

Re: Anyone use plain Similac with Iron (not "Advance")?

The lipids DHA and ARA are key fatty acids that support infant brain and eye development

scientists believe that DHA and ARA are most important for babies when the eyes and brain are rapidly growing and developing (in the last trimester of pregnancy to around 18 months of life).