Like many people here in Perth we booked on the new kid on the block Batik Air. We flew on 27/12/17, and had a pretty good flight with them.
The food was satisfactory and what you would expect. The inflight movies were ok but not that current. The planes themselves are quite old and are formerly from Lion Air.
They do not sell or supply alcohol on these flights - which is really poor considering that all other operators on this run at least give you the chance to buy a beer.