In my experience, I found that Maths in Focus is very useful in explaining the fundamentals of the course, while fitzpatrick is good for mid-difficult questions and for development of the fundamentals and cambridge is probably the best if you've finished the course and/or want to attempt more difficult questions.
p.s. don't rely on maths in focus for exam-style questions: it is far too easy to provide those...iof you had to get one i would probably recommend cambridge...fitzpatrick has sum errors in the answers...and cambridge provides the graphs for questions unlike most other text books