I have been flying JetBlue Mint lately between SFO-JFK and SFO-BOS. 8 RTs so far this year. Just flew UA SFO-BOS RT for first time this year and was pleasantly surprised. On both flights, the flight was ontime, FAs were helpful and in good moods. Great to see UA appear to be trying again. And flying UA made me remember how uncomfortable the B6 Mint seats are! I still much prefer B6 Mint product (can't beat the solo suite), but when UA is cheaper, I will continue to give them a shot.