Hi guys,

Has anybody worked with GMAT Hacks's "GMAT Maths Questions" (which includes 7 "fundamental sets" and 7 "challenge sets"? How is it compared with their "Total GMAT Maths" (aka "The GMAT Math Bible")? Having worked with fundamental strategies, I want to move on to tougher quantitative questions and wondering which book/question bank to use.

Also, how's GMAT Hack's "Total GMAT Verbal"? I saw very few (and mixed) reviews about this book on this forum.

Thanks!