Check out Discovery Bay. Best for family life or if you have a dog. Walking distance to schools, hiking trails, beach and affordable. The ferry takes only 25 min to downtown and runs every 30 min, rush hour every 20. It is unbeatable for commute to work. Not ideal if you are a bachelor and want to party every night, more a family place with a community feel. You can get seeview apartments for half the price compared to HK island.