I've gotten 5 first time passes so far rossco, ive found so far that bristol is a very useful tool to use for the exams, but i use it 50/50 with studying the books.
Certainly use bristol and other question banks to study with, ive seen people go into the exams having not used question banks, and theyre just shooting themselves in the foot by doing that, but if you rely solely on question banks you wont get first time passes and for some of the harder subjects like met you'll really suffer.