There is definately a place for the confuser as the Trevor Thom books do tend to skip over certain aspects, and you can 'hoover' these bits up from the practice questions and the explanations in the confuser.
I have been using both, and it works for me

. I do feel it is important to have a good grasp of the subject, the practice questions then come alot easier and you feel you KNOW the subject rather than the just the questions. Same applies for ATPL I suppose... I hopefully will find out!