Opinions on Princeton Review for APs?

<p>I'm pretty used to using Barrons, and I love how they make their practice tests really difficult so the actual test is seen as a lot easier, but what about Princeton Review? I got PR for AP US Gov, and it's kind of.... easy. I'm not using Barrons for once on this test on I'm kind of nervous. Anybody with PR experience... How good is it? Would you use it again?</p>