Passed cissp yesterday.Here it is my path:
sans.org - bootcamp (all training materials)
GIAC : GISP - passed ,most close questions to cissp
cccure payed member :was taking 75 question every day for the past month and getting 85-90% , helps to understand material ,just read all explanations to all answers ( stopped 8 days before exam)
Eric Conrad : Cissp book
Shon Harris - read only some chapters and all questions/answers - too wordy last edition Shon Harris exam book -useful for scenario questions
Nist specifications- some
Eric Conrad : 11hours book - last week before exam,read twice.
StudISCope exams was getting 66 first attempt ,77 second- did all 3 - useful.
took me about 9 month ( I have to work

)
Some other books as reference .