I have to agree with the majority here.. OAT's books are superb, very well written and illustrated. Combined with the CD-ROM's its a great learning package.
The feedback Q's are also very very good (when i was there 04/05) for all sujects, but there really is no sustitute for knowing the subject inside out.
Having said that, there are a couple of the 'less demanding' subjects (comsx2,hp,law,) that feedback alone will get you through... should i say that?? hhhmmm not sure but its true.
DPT