I've flown with them several times now from BKK to Phuket and Samui... had excellent service and flights each time. Variety of aircraft.... B717, ATR42, Airbus 320. They've just hiked their price BKK to Samui though by 20%. Punctuality was good apart from Phuket to BKK which was dealyed by 30 mins but I reckon this had more to do with the new airport in BKK than the airline.
I was amazed to get a hot meal on the short BKK- Phuket legs but they managed and it was pretty tasty as well.