Hi snamehra,
When it comes to studying for the GMAT, there are lots of different study materials that you could use - but no GMAT product is a 'magic wand.' You have to learn the necessary content - and since the GMAT is consistent and predictable, you CAN train to take advantage of that predictability (by learning the patterns, Tactics and little 'secrets' to the Exam). From your prior posts over the last 10 months, it's not clear how you have been studying. Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich