The Wendell Odom book was very good and is spot on for most of the stuff you will see in that exam. It has been over a year now since I took it, but I do remember it being the easiest of the 4 CCIP exams I took. Probably helped by the fact that I had so much QoS experience over the years.
I hate the fact that Auto QoS was tested on my exam. In my opinion it's a garbage subject. You should check and see if it is still in the exam topics. One of the difficult things with QoS is that especially for switches, there can be different styles of administering QoS and different queueing structures and capabilities. For my test, all you had to know was the 2950. It may be different now.
Good luck, it wasn't hard as I've stated but like all Cisco professional level tests, you really got know exactly how everything works, what the applicable show commands are, and how to configure it on the actual equipment.
Pay particular attention to shaping and policing if you ever wish to continue your studies beyond CCIP.