To get through mine, I used a combination of the Thom book, IMC confuser, RANT, and my instructor's brain - I found the Thom book was pitched at a little too low a level, and so led to me skimming a lot of it... but couldn't compare it to any other books...
And the Confuser will get you through the exam, but not necessarily with a proper understanding of it all... so definatly use something in conjunction of it
Good Luck!