Like some others here i use both the ATC books and Tait.
I found particularly in Aerodynamics and AGK Tait simply didn't cover it all and where he did it was to a bare minimum- classic examples being different tail structures (Ie balance tabs, anti balance, aerodynamic) where there was maybe a few lines for each- tested heavily in asl.
Doubling up on the books may cost an extra 200-250 or so but if you don't thats possibly a resit of an exam or two
