I have the luxury of being near both Logan and TF Green. I much prefer JetBlue over Southwest. The FA's on both are entertaining but JetBlue has assigned seating, seatback TV's,decent snacks and little larger leather seat.
I fly whoever is cheaper and lately it has been Southwest or Song so JetBlue loses out.
At this point, though, I will fly Southwest to get my last 3 RR points to get my free flight.