Actually, the Wiljam stuff was a direct copy of Atlantic's material - I found a hidden Word file on the CD which was a dead giveaway. That's not to say they didn'y copy Jeppesen's stuff as well!
silent_scream - the best solution for your problem is this book:
JAR Professional Pilot Studies at £59.95.
It will also be suitable for the FAA exams except for the law chapter and the spelling
. For the law, you might want to try:
FARS In Plain English
Phil