Isn't that pretty school specific? I mean, besides Netters, Rohens, and Lippincotts, i thought most people didn't bother buying any other books. I know at least one of my schools provided a reccommended book list in a "welcome to school x" publication. But other than that, you should try PMing students at your future school. You could also try searching amazon. I think I saw a reccommended M1 book list on there.