Gotta say, I'm done with JFK-BOS, it's just not worth it. The E190s and RJ's (DL) seem to be bottom of the queue, with priority given to the big int'l flights, and the backups just get ridiculous. From now on, it's either shuttle out of LGA or Amtrak. Not B6's fault, or DL's, it just the unpredictability of JFK makes the experience inferior.