Just curious . . . what didn't work for you? And why?
RightStart Math is the curriculum that just didn't fit our style. It's a great program, and I really wanted it to work for us. But it was just too open-ended. There were too many steps and options in the daily plans. And just too much prep work. I needed an open-the-book and go system. So now we use Singapore. It's going well for us.
But I might revisit RS for dd. I feel like I'm starting from scratch all over again. Kindergarten is coming up, and dd and ds have such different styles.