We tried Math U See and Teaching Textbooks, but found that our daughter was not retaining what she learned. I ordered Saxon 6/7 to do with her this summer, and am thrilled with it. It only takes 15-20 minutes each day, but she is retaining it and making great progress. I like the simple format, and so far, the new concepts are clearly taught. I hope we can continue with Saxon all through high school.
This is our second year using Saxon Math. We love it. The material is presented slowly which helps build confidence for the less-than-excited math student. At the same time Saxon provides solid math skills that stick with the student over time.