What to read next?

[Ralle]

Ok, so this question comes up a lot, but I'll ask it anyway. My focus is mainly (but not exclusively) on low-limit and low middle-limit hold 'em. What book should I read next?

I've read (or have recently ordered) the following:

Hold 'Em Poker
Hold 'Em Poker for Advanced Players
Hold 'Em Excellence
Winning Low Limit Hold'Em
12 Days to Hold 'Em Success
Omaha Holdem Poker
Seven Card Stud for Advanced Players
Winning Concepts in Draw and Lowball
Theory of Poker
Pot-Limit and No-Limit Poker
Improve Your Poker
Caro's Book of Tells
Fundamental Secrets of Winning Poker
Poker Tournament Strategies
Poker: A Guaranteed Income for Life by Using the Advanced Concepts of Poker
Fundamentals of Poker
Zen and the Art of Poker