AP review books/ self studying

<p>Am i the only who feels as if i should use the same type of review book regardless of subject?
Does this type of consistency matter at all?
I like the princeton review book for AP human geo. so far.</p>

<p>No. There are many cases where test prep books vary depending on past works of the publisher. They don’t write the books, they just publish it. Princeton Review is considered the best for AP Human Geo, while their biology book is terrible and Cliffsnotes has the best bio book but the rest are meh.</p>