We are with Wesfarmers - not sure if they are a subsid of a larger company but they are MUCH cheaper than some of the others mentioned. We have swapped all our insurance (Contents and 2 cars) with them and have never had a problem when we have needed them. I had huge problems with the RACV a few years ago when some moron backed into my car and yet when the wooden shed door was blown into my car Wesfarmers didn't even blink an eye they just got it fixed. Excess was chaeper too.