the one in newark is NJMS and the one in new brunswick is RWJMS. I went to both of the open houses last year and it was fun. The only problem i had was in newark, cuz i took the train to newark and the bus comes like every 2 hrs, so its gets boring. But after the presentation i personally recommend u guys to talk to Dr. Heindrich at NJMS. They served breakfast and gave presentations.
At RWJMS, they give u a tour of the new cancer facility and the new BMS childrens hospital, both of them are in the RWJUH complex. They also served lunch and u had the oppurtunity to talk to some current students. Make sure u talk to Dean Terrigino and Dean Seiden about your chances to get accepted into their school.
Based on the impression i got at the 2 schools, I felt RWJMS was the place for me.