My daughter got offers from both schools last year. We live in New Territories. DGS is nearer than SPCC for us. She is strong in music and plays sports (so so). We finally chose SPCC because I want her to be like the other girls in SPCC, low profile and I prefer a co-ed school. She enjoys her school life now and can play music in orchestra and play sport in sport team. I think our decision is correct.
By the way, DGS is also a very good school. During interviews, my daughter felt that the students there were nice and the campus was big and beautiful.