For my 2.0 exams it was simple - I just bought the MCPD Self-paced Training Kit which contained the books for exams 70-536, 70-526 and 70-548. But now that I want to update my certification to 3.5 (prior to going to 4.0) via exam 70-566, I can't seem to find what books to buy for studying purposes (besides revising the previous exams). I'm guessing I need the 70-505 book at least, but I'm pretty sure I'm missing something else.
Those who have done this upgrade exam, what did you use to get through? I already have extensive (2+ years) experience with 2.0 and a decent amount with 3.5, so I don't need to start from ground level, as it were.