I enjoyed this one. The protagonist was so twisted and unlikeable, but all the little details were compelling enough to keep me going. I especially liked him naming all of his captors Dave.
I could've done without the impending Bush assassination at the end. On the one hand, it fit the story well enough. But I'm not thrilled about ending the story with the assassination of a real president, even if that president was unpopular and is no longer president.
But overall, I very much liked it.