I have used this book for several classes and have found that the lessons and accompanying material to be very useful, with lots of room to adapt them to the students' own needs. I use it with students of varying ability, and was able to rework the material for each level. Each lesson comprises one double-page spread with interesting pictures and topics, all designed to teach specific points of grammar, vocabulary and so on, but without distorting the material in contrived ways.
I also think that the audio CD is very good; although, as usual, people are clearly reading from a script, the actors use natural intonation and speed most of the time, with mostly native (majority British) accents. There are also a few fluent non-native accents used. Other books I have encountered have come with some very odd-sounding listening material indeed. There is also a Teacher's Book which has lots of extra material and lesson guidelines.
I think that authors of these books write them with the expectation that the teacher will adapt, skip over or rework much of the material in each lesson. I think it helps for lesson material to be somewhat formulaic because it's easy for the teacher to find things and work on any changes. In contrast, I found the 'Headway' series confusing in this respect.