Best World History SAT 2 book?

I wanted to give the WH SAT 2 in December but I'm really confused as to which book to study from. I've done European World History for AS levels before. I almost got the Barrons book but it didn't have good reviews. Don't know much about Princeton review's, though. Those who have scored 700+, which book did you use and how much did you study for it? Thank you!