Is Kaplan SAT Math II book that bad?

I’ve been studying using the Kaplan 2015-2016 Math Level 2 book and I can’t tell if I need to go get a new book or not. I took pre calc last year and I took AP Calc this year. Please help because this is a really important subject test for me!

Kaplan is usually easier than the real test. Barron’s is just the opposite. If you do well on Barron’s particularly in the last couple practice test, you will do great in the real test.