We've used Saxon Math since the beginning of our home school venture, starting with Math 1. We used Saxon 5/4 last year and love the layout of the book. It allows my son to take charge of his own learning. With some training on how to use the book, my son can refer back to previous lessons when needed and move through a lesson on his own. We both love it.
My grandson loves this program and is doing excellent work. All the forms for logging his scores are provided. He does one lesson per day and if there is any supplemental work, he does that for homework.
Our daughter loves this program! She is doing very well with it & loves that she can do it on the computer without having mom teach every aspect of it (using the teacher CD's). It allows her some independence in her learning.