There seems to be three definitive ciscopress books on QoS that have really good reviews. There is the End to End QoS Network Design, the DQOS Exam Cert Guide, and then the Catalyst QoS in Campus Networks. I've read the End to End QoS and it is a great book. In looking/reading about the other two, both seem real similar to the End to End. The only thing that i thought was lacking in the End to End book was more details on switched uplink QoS/Trusting, layer 3 SVIs Qos, and more real world switch QoS examples.
I was wondering if anyone has read 2 or all 3 books and can kindly tell me which book, if either, would be a good supplement to the End to End QoS. I'd hate to get one or the either and it be similar or go over almost the same info as the End to End.