Good luck to you with your second try! My biggest problem was lack of time to prepare with the SCJP 1.4 exam. I was between a rock and hard place when I took it, because it was end of life for that particular test...I studied as hard as I could for 3 weeks and took the test the day before it was retired...but it just wasn't enough. I found the actual time allotted for the exam to too short and I had to race through 15 or so questions near the end to finish.
I am not exactly new to java, but as a maintenance developer (versus a feature developer), I just don't get to write enough new code to become adapt at all the subtleties one finds present on the SCJP exam.
I know people that wrote no code at all and have studied the K&B book and passed the exam....so I'm hoping that with enough review time this time around I can get through with a passing mark. Having the SCJP cert won't get me a raise at work, and won't likely do anything to help at all in my current position, but it's a matter of pride for me.
Please let me know your findings with CramMaster. I downeded ExamLab (free from a member here) and I'll also try http://www.javachamp.com/
(ree too) and see if they help.
What would be help just now would be chapter or topic specific review tests to help push the details further into my head before going to the next chapter.