Best book for Critical Reading PASSAGES PRACTICE QUESTIONS

I’ve been looking through this website for the best critical reading book but I can’t find comments that say which books are the best for passage practice questions. I know most strategies and tips on how to approach the passages and questions, so I don’t think books like the Critical Reader since it’s mostly about strategies. I just want to know which book would be best for passage practice questions only. I currently have Barron’s CR book, but I want to know if there is any better one since I know Barron’s is really hard. I’m thinking of Kaplan or Gruber’s, but are there other books that is best recommended for practice passage questions?

Books I’m considering:

http://www.amazon.com/Kaplan-Critical-Reading-Workbook-Test/dp/1618655892/ref=sr_1_1?s=books&ie=UTF8&qid=1438556333&sr=1-1&keywords=Kaplan+critical+reading

http://www.amazon.com/Grubers-Complete-SAT-Reading-Workbook/dp/1402218478

http://www.amazon.com/Critical-Reading-Workbook-Advanced-Practice/dp/0991388364/ref=sr_1_2?ie=UTF8&qid=1438553111&sr=8-2&keywords=SAT+critical+reading

http://www.amazon.com/SAT-Reading-Comprehension-Workbook-Advanced/dp/0991388305/ref=pd_sim_14_2?ie=UTF8&refRID=0RXCVEG9MP332Z8HGF0W

I think McGraw-Hill is the best of the synthetic books for CR. Gruber’s is terrible.