All "Explode the Code" reading materials are excellent. I do home teaching for ill or injured students for a school district, and find that they make rapid progress with this series. Learning requires some repetition, and this series does that with variety, maintaining student interest. I'm glad to see the comprehension materials being added.
Beyond the Code is wonderful. I have seen progress in my 1st grader and it has been so effortless. We have used other programs in the past, but this is by far the easiest to use that produces results. And my son likes to read the stories about Zack the Dog.