My child has the same offers. We picked ESF, coz 1) IBPYP, 2) English exposure (we are native Canto), 3) thru-train schools, 4) plan to send our child to UK once finished G7, 5) if gave up ESF, hard to get a place in G1
Vic CWB is half (or more) Chinese half English depending on stream. If top local school is ur path, take it. Otherwise, go ESF.