I don't have direct experience with either of those specific branches, but from what I've heard from other mums, both have decent reputations for their respective programmes. Maple Bear tends to have a stronger Canadian curriculum focus while Mulberry is known for its structured language enrichment approach, so it really depends on what you're looking for for your child. Might be worth doing a trial class at both before deciding lah, since the teacher-child fit at that age matters a lot too.