I'd get the Blackstones manuals. The questions tend to be on the more finer points of the law and the weird and wonderful case law decisions that relate to each (which are in the key notes in Blackstones). Just did the Inspector's exam, there is no key or banker area with it anymore, they questions were all over place!
I've already got these plus the blackstones q+a's. The textbooks are obviously the main tool for me as they are what the tests are on.