Thanks Bert & Kathy. Like they say in the master exam, their job is to toughen us up for the real deal, and they sure do.
I used some of the mocks listed regulary on these forums and bought the practice exams from Sun. In terms of difficulty, the real exam is easier on most topics including Generics as compared to the book.
Declarations, Initialization and scoping: 91% Flow Control : 90% API contents : 90% Concurrency : 100% OO concepts : 80% Collections/Generics : 90% Fundamentals : 90%