Is this a thread about the phrase, "in my humble opinion", or is it a thread about books similar to Kasparov's My Great Predecessors? I don't think people really care about the expression here, but, since that seems to be the subject of the point that you wish to make, I looked online and found this:
"Used to introduce or qualify a statement, as expressing one's own view, not one backed by external authority or to be accepted without question"
If one's personal opinion is that something is "fantastic", I don't see anything wrong with saying so and including an indication that the opinion is not to be accepted without question. If you want to argue otherwise, so be it, but as an NM writing in this thread, I think that you would inspire more interest if you chose instead to write about your own opinion of the original Alekhine, Euwe, Smyslov, and Tal books on their best games.
I agree with earlier posts... Marin has fantastic books... and game collections from the players themselves like Tal are generally fantastic even Kramniks book is good but I have a suspicion it is mostly ghost written