AIS or NAIS

Hi All, my daughter received nursery offers from American International School (AIS) at Kowloon and NAIS at Sai Kung (we live in Tseung Kwan O area). I am struggling to make a decision for her. I know that AIS has quite a long history, a good reputation, and has a very well-designed structured US-based curriculum. NAIS is a bit new, not too much information online compared with AIS and it offers UK-based curriculums. I went to the school tours of both schools. Even AIS’s facilities is a bit old while NAIS is relatively very new but I actually like them both. I hope to seek advices of the two schools from both academic (like course levels - math and science subjects) and social domains (characteristics like politeness, manners, well-rounded person)? Thanks!