Which publishers have better AP test prep books, especially for European History? That's because Euro. history is the class I am taking now. Different publishers publish better books in different subjects, so that's why I only ask for AP European history. But if you have suggestions for other subjects, feel free to add them here because I might take those classes too.

Here are some of the popular publishers:
-Research & Education Association (REA)
-CliffsAP
-SparkNotes Power Pack
-Random House Information Group (those "Cracking the AP ____ exam" ones)
-Barron's
-Peterson's

Any suggestions to which one to supplement?

Princeton is always better than Barrons. Also look at the AP books by collegeboard.

Princeton ones are the best. The AP world book was funny, they had little funny things at the bottom of certain pages.

I personally think that the Barrons book is better for math and sciences while the Princeton Review does better w/ History, etc.

Barons book sucked for physics. I think. I read half a page and got bored.

My first AP book was Barrons, and ever since then, it's what I've depended on. But it's hard to beat SparkNote Power Packs. Those SparkNotes people are frigging geniuses. GENIUSES.

Wait... is it supposed to be interesting?...

Then NONE of the freaking books are good.

Yes