If it's only the car & you are not looking to group all your insurance together, try Ecar insurance.
www.ecarinsurance.com.au
There is also Ebike (same company)who I have my bike insured with.
For my bike, SUNCORP etc were $1000/yr, Ebike is $460 for the same cover.
I've had 1 claim for attempted theft damage & the claim was approved within 3 business days.
Ecar is the same company so i can only assume they wouldhave the same service.