The second edition version for OG Quant
and OG Verbal
are better in the sense that they contain a larger portion of difficult questions. But some feel that the books still suffer from too many low-difficulty questions. I suppose, then, that this problem is even more pronounced in the previous edition.
While the first edition is probably cheaper, I would advise you to purchase the newest version - even if the difference in quality between the two is not that noticeable.
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