John Anderson If you are looking for formula, yes. If your sense of disbelief is permanently suspended, yes. If you are short of kindling for a campfire, yes. If your pet cockatoo is too sophisticated to poop on plain old newspaper, yes. Otherwise, not so much.
Dave Lewis Deception Point is DB's best book, they go downhill from there on... the only one where you actually care about the main character.
Letitia Moss I agree with Kiki; the worst by Dan Brown. Written very well but a total yawnfest until the very end when it finally picked up. I also found the lead up to the final 'sex' scene a little nauseating.