I love Saxon math. I love that they emphasize review, review, review. My algebra student has even learned to appreciate the repetition. The only thing I've ever disliked about the material is the difficulty in separating the worksheets from the books without tearing them.
This is an excellent math curriculum to use. At first it might be a bit confusing how to use all of the forms given, but once you get into a few lessons it gets so much easier. My fourth grader is enjoying this. You cannot go wrong using Saxon.
I loved Saxon 5/4. The scope was comprensive for the grade level. The component that was a success for me was Saxon Teacher, it presented a totally integrated teaching environment for my children allowing me to let them be independent with their math work, freeing me up to teach my younger children.