We used one of the local childcares in the area - a named franchise, and found that it was not really very stimulating for the children. They advertise it as 'kindergarten' but the activities are note very focused and the kids are not engaged all day, but often left to their own devices. Luckily it was only for a few months before starting formal school based kindy. The difference was amazing, and our children were much happier and actually got to learn something!
It is hard to know which is the best unless you send one kid to each! Not having so many children though I can only base it on one school. The one at St Maria Goretti school is pretty good and they will be upgrading next year to accommodate the two classes. But, I think any in the area would be quite good.