A list of recommended books for TOEFL® IBT

[Tennisball80]

I found many books to prepare for TOEFL IBT on Amazon. I'm not sure which one I should use. Do you guys have a list of recommended books for preparing TOEFL IBT ? Any good tips ?

By the way, hello I am from Canada.. originally from Japan though.

[H@l0]

I use:
Official Guide for Toefl ibt
Barron TOefl ibt
and i also have kaplan Toefl ibt.
My friend told me Official Guide and Barron are enough, kaplan's is more difficult. However, i also want to study kaplan's.