Law school professors and students: All wood or blue?

Which citation manual is preeminent today in the nation's law schools, the Bluebook or ALWD? If you can, please answer in any or all of these three areas: quantitatively (number or estimated number of schools that prefer or require one or the other); qualitatively (which one the best schools in the country tilt to; and dynamically (today's stats notwithstanding, is there a clear trend moving to—or away from—one or the other).

Totally unrelated to the above question: Which one do you personally prefer over the other, and why?

Thanks very much.