Hello aspirant

MTG neet guide has not yet published this year.It might get published in this month or by next month November.

Till then you can get MTG 2019 book for chemistry which is the best book to crack neet.

And about the book, it is more than enough for neet provided you build your concepts strong by reading ncert or textbooks for inorganic-organic as well as physical chemistry good. You can score around 140-150 marks in Chemistry out of 180 NEET by using this single book so it's beneficial and worthy. But yes also, if you have time and interest, then you can also go for GRB or ARIHANT.

Hope this helps . All the best .