Anfield (Kowloon Tong) vs. ESF (Tsing Yi) vs. Montessori (DB)

My 2.5 year old son has offer for all three schools (only) and i cannot decide which one to go. I love the Montessori one the most, but it does not have any primary school affiliation and we all know how important that is in Hong Kong.

We live in Tung Chung, so all three requires a bit of traveling. My son is very active and curious, so i am not sure if we should get him a school that is higher in discipline or higher in freedom...