The contenders she writes about are the two I've been most curious about, and she ultimately chose the one I'm most likely to read. So, yay!
From her decision:
My predispositions: I rarely care for westerns, especially not sad ones. I quite like a smutty book, especially a funny one.The Sisters Brothers is a sad western and Lightning Rods is a smutty comedy, so I read H’s novel first, pleased to be descending into a bit of highly literary obscenity. I write for teenagers, and the books I read for work are often pretty horndoggy—but never creatively filthy.