I have heard nothing bad about the carrier and they run new(ish) A320s on their international routes. Do note that SQ just amended their schedules and now also fly daily SIN-RGN on a 777-200 (2-class), at least part of the year, in addition to the SilkAir flights that continue to operate 2x daily. 7:55am departure and approx. 10:30am return departure from RGN.