Sam Davis' textbook is the most recent, and it does go into detail on all things, perhaps a little too much detail in some areas. He still has some things not 100% correct, but he is on the right tack.
The Jacaranda text is also very good, some very good case studies and scenarios in there for you to use and practice on. Remember that in the HSC Q21-Q24, and both of the two options you do will have a scenario that will require you to demonstrate your understanding of IPT concepts. If you find yourself being weighed down by the Davis text, consider the Jacaranda.