I'm using Nestle Good start plus

We use the Target brand (yellow top) that’s comparable to Enfamil Premium Infant. We’ve been using it since the beginning and my son does great with it. It’s 2lb and lasts us about 2 months but he only eats 1-2 bottles a day of formula

I use target brand of gentle ease kind . Purple container. We started with enfamil brand but target / Walmart versions are same ingredients and cheaper.