Traveled SpiceJet from Colombo to Bangalore via Chenna return in Dec/Jan on a Q400 aircraft. Overall, it was a very average experience.
The ground staff were very friendly and welcome. However, the cabin crew was the opposite as they looked tired and although they tried to be friendly, they werent welcoming. The vegetarian subs they had on board was pathetic and considering the cheap quality, the price charged for the subs was quite high. The cabin experience is standard as you really cant expect much from a regional aircraft like the Q400 but I really feel that Colombo being an international sector with high demand, SpiceJet needs to use a Boeing 737.
Will only recommend Spicejet if there is an excellent deal.