Fitzpatrick IMO especially the newer ones provide the best then would be Cambridge DO NOT use math in focus or as astroman said, enigma will murder you. You have been warned
Cambridge or Fitzpatrick. MIF should be use if you absolutely don't understand a concept since it does act as a foundation for your understanding in maths
Maths in Focus..is a good book BUT only for General Study.. like when u first learning the topic. But for practicing topics Cambridge because they are challenging and good for the HSC..
Trust me because I did Maths in Focus the whole year and I suffered...