The question could be changed to: “what’s your favorite programming language?”
I would said that this is a subjective question, as everyone has different opinions in expressiveness and design, and the productivity also depends in your experience.
On my case, this language would be Ruby, as that’s where I feel at home.
Looking forward for reading this book.
Masters of Doom is a great read for anyone that have played any of their games (Doom, Quake) or have played games from the 90s.