Lots of practice tests, but otherwise the material was useless to me. I went with the Logical Reasoning Bible by power score.
The real thing:
LSAT questions are hard to manufacture so getting them from the real source is definitely a good idea. I supplemented this book with a book from Baron because this one doesn't have a lot of tips and strategies.
The Ulimate test prep:
When this was mailed to me it came to me in pretty good condition (even though I was really excited to receive my first lsat prep book). But after looking through the entire book, I found no pages missing and it ended up being worth my money. But I haven't investigate the entire book as of yet to ensure that its a high quality lsat book. But so far its been good to me
You're Better Off With "The Next 10" by LSAC:
As a professional LSAT tutor/blogger in NYC, I can say that the explanations in this book are useless. Additionally, the three exams in this book are far from recent. You're better off with The Next 10 Actual, Official LSAT PrepTest (Lsat Series) (Preptests 29-38) and puzzling over the questions yourself or getting a tutor. Good luck!