We have 2 LG split systems which are fantastic. In the bedrooms we have Sharp, and also fantastic. The house is about 14 years old, we've been here for 4 years and have never had a problem with any of them.

My parents built their house 18 months ago and they have LG throughout their house and Samsung in their bedroom. The LG a/c are fine, but they have had problem after problem with the Samsung. The motor in it burnt out twice within the first 6 months. They only got that one as Harvey Norman stuffed up their order and accidentially ordered that one.

The a/c specialist who fixed the Samsung one for them recommended Mitsubishi air cons, apparently they're really good.