Manhatten GMAT books

All the MGMAT books are excellent... especially the "Word Translations" and "Sentence Corrections". Use them in conjunction with the OG.

I also highly recommend the SC book. I've purchased many books in the past for the GMAT, including ones from Princeton Review, Veritas, Kaplan and MGMAT. Here is how I would rank the books in regards to SC strategies:

1) MGMAT - The best. A MUST read.
2) Princeton Review - A good primer, although not as comprehensive as MGATM.
3) Kaplan - slightly below Princeton Review
4) Veritas - The WORST. Only available to Veritas students, but a COMPLETE waste of time. This book has a horrendous verbal strategy guide that is will ultimately LOWER your score.

Case in point: After reading the MGMAT books, I regularly get 80 - 90% of the SC questions right (after only 2 weeks of studying) and spend less than a minute on each question, VS. before when I was in the 50 - 60% range and spent 2 minutes on each question.

Good luck!

Granted I have a natural penchant for verbal anyhow, but the Veritas stuff worked for me. Moved from 86-91 percentile to consistent 94-99