Our kids go to Greenfield, which is right across the hall. We love it.
Sophie looks lovely to me - open and sunny. My daughter says the uniforms there are prettier!
But we're staying at Greenfield, as my older daughter has been there for 3 years, and my younger one just started this year.
One of our relatives applied to Sophie & did not like the interview process. They felt the teachers were harsher than at Greenfield, and that they were not very welcoming to mainland kids. But that's just one anecdote.
Good luck!