Roshanarose, I will not be writing Gruber a fan letter because, although I admit he is a brilliant writer, I do not like all that sex and violence and black magic and drinking, etc. In short, I am not truly an adventure/thriller kind of reader. Just read them because one of my sons gave me 5 of his books last Christmas and a beloved first cousin, who, come to think on it, has only shared my tastes about half the time, strongly recommended him to me. Bottom line, I would not really choose Gruber.
Dibdin can be depressing, as well and all. But he, too, is an inspired writer. I like Dibdin a whole lot better than Gruber.