I loved my Kingfisher flight I took from Mumbai to Calcutta. You are treated like a King from the moment you identify yourself as a Kingfisher passenger. My bag was getting scanned when a KF attendant took my flight details, how many bags I was going to check-in. As soon as I went to the check-in counter my boarding pass was already printed and kept ready for me to pick-up. Thats so cool not having to wait at the baggage scan and also at the counter.
Baring the airport traffic the flight aims to take off on time and it pretty much did so. The air hostess welcome the economy passengers just as well as a first class passenger would be treated. And boy, are these air hostess attractive? They are fabulous, ravishing and very comforting. The in-flight-food is a delight and does not taste like airline food at all. And of course if I am not wrong they are the only domestic carrier who offer personalized TV and AUDIO on every seat. (Economy also). What better way to spend a long flight if you are travelling alone.
They also have a membership card which gives you some privileges. I am not so sure about those details.
Conclusion: If you can afford it and get a chance then you must surely opt for Kingfisher Airline.