Hai , I just now finished my SCJP 1.6 with 88%.My next target is SCWCD 1.5. Now i am having HeadFirst Book 1st edition. Is it Enough to get a good score in SCWCD 1.5 ? I read Bryan Basham's post related to SCWCD 1.5.He told in that the questions will be "performance based" instead of " knowledge based". So,Is the Mock Exams in every chapter and the Final Mock Exam in the Head First 1st edition book will be Useless? Should i go for another book ( HF 2nd edition ) for the Mock exams ONLY?