I just passed SCWCD 1.4 with 75%. Man I felt there were more questions on EL than any other topic. Also in the end I got lot of questions from J2EEpatterns and pretty difficult design situations. I got only 66% score in J2EE patterns.
Thanks to the authors of Head First Servlets and JSPs. That was the primary source of my preparation. In the end I also took exam on Jiris online (one exam only) and all exams on jdiscuss.