This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I'd say, despite my usual thought that the latest is probably the best, that you should take whichever you feel more comfortable with. If you use 1.4 in your professional/academic life and know that one better, take the 1.4 exam. Otherwise, prepare for the 5.0 exam.
Theodore Jonathan Casser
SCJP/SCSNI/SCBCD/SCWCD/SCDJWS/SCMAD/SCEA/MCTS/MCPD... and so many more letters than you can shake a stick at!