Hard to say, especially as I don't have every single one (yet). Each of them have different strengths - for instance, Avrukh's two volumes on 1.d4 has probably had the most impact on high-level chess, Marin's three volume English series has the clearest explanations, and Ftacnik and Schandorff do a good job of pointing out what you need to know (perhaps too good a job for those who like the nitty-gritty details), and the Tarrasch book was quite groundbreaking and inspiring. The other books also had their advantages, so I don't know. You can't go wrong with any of them, although my feeling from a quick glance of Mikhalevski's book is that it's aimed at a professional player trying to hold a draw with Black. That's not a criticism in itself, but it's not what I'm after in a repertoire.

So if pushed for an answer, I'd say the first one because it set a new benchmark in the opening book genre and continues to be relevant today.

GM-repertoire Modern Benoni must be very good, too. I know of a 1700, 
who learned the Modern Benoni with this book and got a winning position 
against a player rated 2100+ (finally a draw). I think it is very remarkable 
that this book can be used by a player rated around 1700. 

Pingudon wrote on 03/17/14 at 23:21:45:

http://en.wikipedia.org/wiki/Troll_(Internet)#Usage

Your question is weird so I do understand that some people are doubting if you are serious or if you just are making fun.

I also have the impression that people are quicker than 10 years ago with labelling trolls so there is less flexibility about what is still ok to write.

I think these books with the tittle GM repertoire tend to have more variations. It Does not mean they are better but they are more dense than a lot of opening books.

Ametanoitos wrote on 03/16/14 at 16:47:16:



"The real question here is if other books can be considered GM Rep books even if they are not from QC."

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not sure why that is a question, as if qc have some philosophical monopoly on gm rep books simply by using it in the title of the book?      hahaha   

chess stars ... the open games for black, comes to mind as a good choice for those people playing 1. ....e5

inexpensive and compact

dont know if this question is for real or it is trolling ...
pingudons threads seem to me to be just troll attempts

Huumm my question was too difficult or too silly. Anyway I think the best GM Repertoire is the French defense. And I am still waiting the third book