I like the T6 "prime" terminal much better than our main one. It's quieter (except when the door alarms go off), more seating, air conditioned well. We have a crew lounge there that all the non-JFK based flight crewmembers use because we just hate sitting in the main one. And yes, BOS does usually go out of T6Prime. I have been working 1010 a lot lately and we're usually out of 21-24...