I don't know about other products, what I do know is the Math Destroyer is on target for the DAT and will take you  through a wide range of problems needed to succeed in this section. You do not want to be surprised on test day.  At the least do 1-3, 7 and the last 3..but again that is at the very least if you are pressed for time.  But if you have the book I am baffled as why you will not complete it!  I do hope you change your mind and give the Math Destroyer a workout..
Nancy