Bilingual International school HCMC (Ho Chi Minh City)

I'm looking for a bilingual international school for my son and I found only two choices BCIS (Bilingual Canadian International School) and AIS (Asian International School). While the facilities of the first one easily outshine the one of the latter one, AIS seems to have more international connection, is older and has more students. AIS fees are about half BCIS ones.
Help need in the choice, time is running out.