I’ve taste-tested a wide variety of oat milks, and the ones I would recommend using are: Califia Oat Milk (I particularly enjoy their Barista Oat Milk variety), Oatly Oat Milk (both their full-fat and low-fat varieties are nice), and Elmhurst Oat Milk. However, if there are other brands in your local grocery store, give them a try to find what you like best!