i used the jacaranda and it covers what you need to know pretty well, yet i remember it had wrong answers in the back half the time, but anyway now that im in uni, i would say " PHYSICS : Calculus second edition, by Eugene Hecht" is a real good buy.
From what i remember of the HSC, the projetiles, forces, newton, electrostatics and all that stuff on space is covered in this book, as well as quanta to quarks.. But the thing that makes me like this book is the CD, i had a few maths books with CDs and they were all shit.
This one u get a nice chaper summary in terms of 1. easy multiple choice questions, 2. explenations on how to 'read' the questions, so u know whats really being asked (very important) and finally 3. talks about the concepts by giving u a graphical way of understanding different things, eg, projectiles...
I did see similar graphical demonstrations on the web, but were all lazy and as someone said, we prefer to have 1 book, or 1 source which covers everything well, i would say this book is the one.