I'd say Carrier - Condura - Kelvinator are still very much good choices. Among the three, Kelvinator is the cheapest although its argueable that all three are pretty much the same.

Panasonics are as expensive as Carriers I think, but I'd say have also good quality.

When we were canvassing at Ansons, they say that the Samsung aircons had the most returns/repairs. I just don't know how accurate their statements are.

By the way, I'm selling a Kelvinator 1HP Window Type [Energy Series] (just a month+ used) for 12k. We ended up getting the wrong horsepower for the room size which is just about 20+ square meters. PM if anyone's interested/more info! Thanks!