Flying budget airlines, I would suggest go for go-air. For me, its either the kingfisher airlines / jet airways or go-air !
>> good cabin ambiance
>> clean air-crafts !!
>> warm and helpful flight crew
>> helpful ground staff at check in and boarding
>> always been on time
once had even left my jacket at the airport terminal and remembered it when i boarded, got the stewardess and some ground staff running to get it back but they all did this extra work with a smile and got it back without making a lot of noise around !
Food on-board, not free, well, kind of expensive too. But is fresh and tasty!