<p>A lot of people like AMSCO. Personally, I used the APUSH Sparknotes Pack and the Sparknotes SAT 2 U.S. History review book. I thought the tests and flashcards in the Sparknotes pack were awesome, and the review in the Sparknotes book was very extensive. Also, I spent less than $10 on both because I bought the review book used, and the Sparknotes pack on clearance. 
I got a 5, btw…</p>