Trevor Thom book rights have been bought by Pooleys and are now known as Air Pilot Manuals I believe.
I use them in conjunction with airquiz and have no complaints. I have passed my first 2 PPL exams so far using the above combination. For MET I have the book and also the CBT, I quite like the CBT it makes study more interesting, but every one has it's own personal choices.
Make sure you learn the subject and not just Q&A's.
