Which psat review book should i buy? barron's or princeton review?

Someone please help me out. i don’t know which one to buy.

My $.02 is neither, I like Erica Metlzer’s grammar and CR prep books as well as PWN math prep book also Khan is free.

I agree with @3scoutsmom about Khan Academy, but if it has to be one of the two, I’d recommend Barron’s. I’ve heard that PR’s practice tests are soft.

^ Barron’s practice tests on the other hand are more often than not harder than the actual test. Which can be a good thing I guess?

I have the 2017 PR PSAT book and it is basically just a dulled-down SAT prep book. If you are looking for National Merit, note I would not recommend this book.