Eeh.... The flights that I've had with B6 were great, but they didn't come near JFK or BOS.
From all these stories I'm beginning to wonder whether B6 has any good logistics people, because that's what seems to be holding up everything.
Southwest (I hate their RR program now, but that's besides the point) IMO has perfect logistics (their flights do get delayed, etc.) but they don't have consistent problems as described on this board.