[sun surfer]

I'll be almost equally happy with any of them winning, but I'm pulling for Behind the Beautiful Forevers.

Its abstract mentions a few of these, but it is a very highly regarded book. Boo has won the Pulitzer and received the MacArthur "Genius" grant, the book won the National Book Award and it was a National Book Critics Circle Award Finalist. In addition it's also appeared on numerous best-of lists:

Spoiler:

NAMED ONE OF THE TEN BEST BOOKS OF THE YEAR BY
The New York Times • The Washington Post • O: The Oprah Magazine • USA Today • New York • The Miami Herald • San Francisco Chronicle • Newsday

NAMED ONE OF THE BEST BOOKS OF THE YEAR BY
The New Yorker • People • Entertainment Weekly • The Wall Street Journal • The Boston Globe • The Economist • Financial Times • Newsweek/The Daily Beast • Foreign Policy • The Seattle Times • The Nation • St. Louis Post-Dispatch • The Denver Post • Minneapolis Star Tribune • Salon • The Plain Dealer • The Week • Kansas City Star • Slate • Time Out New York • Publishers Weekly

And here's another review of the book:

Spoiler:

Katherine Boo spent three years among the residents of the Annawadi slum, a sprawling, cockeyed settlement of more than 300 tin-roof huts and shacks in the shadow of Mumbai’s International Airport. From within this “sumpy plug of slum” Boo unearths stories both tragic and poignant--about residents’ efforts to raise families, earn a living, or simply survive. These unforgettable characters all nurture far-fetched dreams of a better life. As one boy tells his brother: “Everything around us is roses. And we’re like the s**t in between.” A New Yorker writer and recipient of a Pulitzer Prize and a MacArthur “Genius” grant, Boo’s writing is superb and the depth and courage of her reporting from this hidden world is astonishing. At times, it’s hard to believe this is nonfiction. --Neal Thompson