This is what the consensus seems to be at AZCOM
#1 Board and Wards
#2 OB/GYN Blue prints, since the last COMLEX 2 this year apparently had lots of OB
#3 Savarese OMT
Some say PEDS Blue prints since there seemed to be a lot of peds as well. Other books that seem to be popular is First Aid step 2, Crush.