I too have same questions.
I have exam on 31st October and by now i am not confident about quants however i can solve the OG problems swiftly.
Regarding verbal I am a bit confident about CR and RC and working out with MGMAT for my SC improvement.
Please suggest me single book for Quants and single book for verbal or let it be single book for each Quants,SC,RC and CR from where i can practice all the levels (easy , medium, difficult) and hence figure out my weakness and strength.
Ine next week I will start giving CAT (Mgmat and gmat prep) but want to be at level of perfection before that.
I am aiming for more than 740.
Instead of suggesting books to both of you, my advise is to take a practice test to identify weakness(/es).
Reason is that you have only 12 days befofre your exam and using a book may need investing hours while a good practice test (use GMATPREP 1, if not used till now) will help u identify same in 4 hours
Then you can use any prep book to polish particular area and practice.
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