Do you know if similic formula is bad?

I heard so many bad reviews about similac that it contains led or even people hav found bugs inside I believe magnets. So after birth I wasn’t able to breastfeed my baby so they gave me formula the only option they have here in my hospital was Similac I asked if I was able to buy my own for personal reasons they agreed so bought the Enfamil newborn and he didn’t take it so well he started puking constantly and I asked if I can give the Similac he took it so well wasn’t expecting it. But idk I’ve just heard so many bad things about it. Plse give me your honest opinion on the formula. I was thinking of switching to Emfamil again but this time trying a different flavor or less hard like the Soy or Gentlelease one. From emfamil