Eh I haven't tried Dupro soy myself, but a few of my mum friends have used different soy formulas and they said okay lah, especially if their kids allergic to cow's milk or lactose intolerant. Dupro is a local brand so it's easier to find in most supermarkets here, which is convenient! If you're thinking of switching, might want to introduce it slowly mixed with the current formula first, sebab some babies take time to adjust to the taste, especially soy ones which a bit different. Best to check with your pediatrician too if your baby has any sensitivities, just to be safe. How old is your little one?