I don't have one of their at-home machines, but I use the big machine in the Williamsburg Whole Foods. My stomach is sensitive to the fillers in bigger brands like Oatly, but I prefer oat milk to almond milk, so having a fresh option like Numilk is really appealing to me. I love the simple ingredients and the feeling of "making" my own oat milk, too. The taste is great and I love it in matcha lattes.
I wish they had a sustainable reusable bottle option (but maybe that's a qualm with Whole Foods), and I wish the cost were a bit more competitive.