As far as the overall contents of these two books are concerned, May 3rd is a special review. In addition to the ten-year college entrance examination, there is also last year's college entrance examination paper. If you just want to do last year's paper and don't care about the thickness of the book, it will be better to write the paper like a workbook.
If you want to find some new ideas or judge the direction of the test questions, you can usually find them by looking at one or two pages of topics. The average error rate of 10% or less is more suitable as a usual exercise (if it is an advanced exercise, it may be normal to overcome the last few problems, and the most important thing for this kind of problems is to learn the problem-solving ideas and strive for a good type next time).
As far as the number of questions is concerned, the ten-year college entrance examination is definitely more (personal feeling). First of all, make a plan in your mind and how long it will take you to do this problem at most every day. Then through the difficulty of the test questions, roughly estimate how long it will take six days a week. If it is beyond the scope of psychological acceptance, it is not recommended to buy it.
About the answer. In general, the more detailed, the better. At least at first glance, most of your doubts have been analyzed, but if you don't study by yourself during the summer vacation, it's actually not a big problem. There are some mistakes. Generally, if you find misunderstanding in the process of selecting books, you should be prepared mentally if you insist on selecting books.
Some teaching AIDS will have the same knowledge as the class notes in front of each chapter. You can read the book after you buy it, so you might as well make a decision after reading it.