I used COMQUEST and COMBANK, FA, a little bit of Secrets, and Savarese (didn't do the ques in bank of Savarese or the quizes....skipped all of the technique chapters).
Did the OMM, medicolegal, GI, ob and peds questions from each bank almost twice. Happens that I didn't have a lot of peds or obgyn! Man, I was disgruntled about that. Seems like each test is unique. Read FA twice but def didn't have it down cold by any means.
If you want a stellar score I rec USMLEworld and COMBANK. If you don't have enough time for WORLD, do both QUEST and BANK. Honestly, I'm not sure any amount of studying can REALLY prepare you for COMLEX 2. There were several WTF questions, and many "guess what I'm thinking"/vague questions. What you can def prepare for is the OMM and medicolegal questions. Savarese and the qbanks were enough prep for OMM.