I read previous version of this book. It's a wonderful book with an excellent Reading Section. Its Toefl essay section is all that one need to write a good essay. Prior to reading its section, I scored 3.0 on TWE and after it- 5.0. So, it teaches you how to write essay even if you didn't write american essay before. The listening section is also full and very comprehensive. SO, if you have a patience and read it, you'll improve your score greatly, but no more than 560-80, if you don't use another listening sources as radio and TV. However, grammar section is not very strong. Among many books I read, I found useful only Barron's grammar. Cambridge's grammar is understandable only if you read Barron's before. Otherwise,you'll find it a bit difficult. But it has a good quiz for each grammar lesson(Barron's quiz is very simple and don't give you an assurance in your knowledge). I would recommend this book for everyone who want to score high together with Barron's grammar. Actually, I scored 610. So, decide it by yourself, but allow at least 3 months for whole book review.