We have had moments at our school that have been frustrating, but on the whole we love it. What makes it ideal to me is that it's small and the director and teachers have full authority to make changes as needed. There are never any "I'd love to but that's against policy" statements. The staff are approachable, value parent input and really care about the children. With those things in place, the hiccups along the way always seem to get worked out.
It probably also doesn't hurt that the director has 2 (now adult) HG/PG kids and one of the head teachers has a PG daughter as well as her Masters in Gifted Education.