Oh don't worry, this is such a common dilemma and you are definitely not alone in feeling torn! Both options honestly have their pros and cons, and a lot depends on your own situation at home.
From what I've generally heard around, infant care can be great for structure and early socialisation, but the one real concern parents raise is that babies do fall sick quite often when they're mixing with other children, that's just hard to avoid. On the helper side, the one-on-one attention at home is lovely, but the key thing people always stress is that supervision is really important, especially in the early months, you can't just leave everything fully to the helper without some oversight.
One thing a mum I know mentioned is that finding a good helper with some caregiving experience, maybe even a nursing background, can make a big difference if you go that route. Cost-wise, both options tend to be fairly comparable in Singapore, so it really does come down to what works best for your family setup and peace of mind. Take your time, you'll find the right fit!