Joshua D. Angrist, David E. Card, Alan B. Krueger, Sir David F. Hendry, M. Hashem Pesaran, Peter C.B. Phillips, Sam Peltzman, and Richard A. Posner, all very good possible picks in my view.
My personal prediction (which never once has been correct, at least not in the proper year) is for an early “shock” prize to Banerjee, Duflo, and Kremer, in part to show (try to show?) that economics really is an actual science.
In any case the above link offers Reuters picks for the science prizes as well. Here are some other speculations for the science prizes as well.
For the pointer I thank Michelle Dawson.