I already own Manhattan GMAT SC
I have high accuracy in moderate level SCs. But in the last 40 questions from OG, my accuracy went for a nose dive!
I think I need a thorough review of advanced grammar.
Someone suggested Powerscore SC
, but I also read about Gmatclub's Grammar book.
If at all I buy either, which one should I opt for?
Which one of these is the most comprehensive and "GMAT-centric" book? so that I do not need to even think about touching another.
GMAT done - a mediocre score but I still have a lot of grit in me
The last 20 days of my GMAT journey