I just finished the 2nd book 3 days ago and I have to say that it was one of the best things I've ever done. My vocabulary has increased 10x. 2001 and RTK took me a year to complete however it was worth ever min. It really made my life easier. Anyway, I only did recognition, so I didn't have to spend as much time reviewing. I'm sure if I did the cards both ways I would have a greater command of the words, but I'm happy with my results and I never wanted to kill someone while I was doing my reviews. I think some people wanted to know the kanji stats for JLPT levels. I only added a few kanji that weren't in the book.
Kanji Percent
Level 1
210 / 922 22.78%
Level 2
635 / 739 85.93%
Level 3
180 / 181 99.45%
Level 4
102 / 103 99.03%
Total
1127 / 1945 57.94%
So kanji wise it's enough to pass level 2 although you wouldn't know all the kanji. If you really like native sources then you don't need this book(just mine things yourself), but for me reading something and having to use the dictionary on every word isn't fun. For someone like that this book works wonders. You don't have to type anything yourself or find anything, just put it in Anki and be done with it. Quick easy and effective. I heard they are coming out with a 3rd volume and I want to buy it, however if it takes too long, I might not need it. Come on Coscom, hurry up.
Kanji Percent
Level 1
210 / 922 22.78%
Level 2
635 / 739 85.93%
Level 3
180 / 181 99.45%
Level 4
102 / 103 99.03%
Total
1127 / 1945 57.94%
So kanji wise it's enough to pass level 2 although you wouldn't know all the kanji. If you really like native sources then you don't need this book(just mine things yourself), but for me reading something and having to use the dictionary on every word isn't fun. For someone like that this book works wonders. You don't have to type anything yourself or find anything, just put it in Anki and be done with it. Quick easy and effective. I heard they are coming out with a 3rd volume and I want to buy it, however if it takes too long, I might not need it. Come on Coscom, hurry up.

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