<p>I'm thinking a Barron's for Math II and a PR for Physics. Or should I just get the big fat blue book for all subject tests?</p>
<p>Has anyone gotten away by just using Sparknotes/other online resources for everything? It seems like so much is online there's hardly any point to buying stuff.</p>
<p>It is good to get the CollegeBoard Blue Book because it is good to practice on an actual exam as these third party publishers can only offer approximate replicas.</p>
<p>From my experience the Barron’s Math II book is much, much harder than the actual exam but it is good for practice. The McGraw-Hill Book (available if you look around online) has more accurate practice tests, but it does not offer review questions after each topic.</p>
<p>Princeton Review is good for Physics but their practice tests are somewhat harder than the actual exam because their questions are both longer and involve more mathematics.</p>