I really feel you on this, finding the right preschool for your son is such a big decision and it is not easy at all. I have a friend whose daughter attended a MapleBear branch and she said the teachers were very nurturing and the curriculum felt structured but still fun for the kids. She mentioned her girl settled in quite well and was coming home excited to share what she learned, which is always a good sign lah. It might be worth going down for a school tour so you can get a feel of the environment yourself before deciding.