GMAT Strategy

Quick Question:

I just wanted to get a feel of how helpful the Manhattan Question Banks and Flashcards were to people who've used them.

I am a month away from taking the GMAT and am wondering wheather to spend time going through them or just dive into the Manhattan CAT's.

Also, it sounds like the Quant CAT's are really good practice. Does anyone have any opinions on the Manhattan Verbal sections?

Would love to get some viewpoints.

Thanks.