I flew with AirAsia for the fist time a couple of months ago RT from Bangkok to Penang for a weekend. I’ve never flown a Low Cost Carrier before and was pleasantly surprised. The two of us paid an extra 250 baht each, each way ( if I recall the amount correctly) and pre-slected the aisle seats on the first row. Plenty of room, pleasant staff both at check in and on board. Flights left on time. We chose Air Asia not so much for the price as for the schedule, Thai’s schedule to Penang being really inconvenient. and the AirAsia price was a pleasant bonus.