You choose car rental Australia for discovering the continent. Australia is one of those amazing destinations to travel to : hopping kangaroos, cute koala's, white beaches, the aboriginals, red desert sunsets, etc. Australia, with its incredible panorama's, can be as big as your imagination. The landscape in Australia is most diverse : it has : mangrove swamps, woodlands, rainforests, woodlands, deserts and grasslands. A place you should visit!
One of the disadvantage of Australia might be the cost of traveling, at least compared to other destinations. Backpackers praise the nature and often travel by campervan, some even decide to hitchhike, but that would not be considered safe. A campervan might be a cheap solution as you have both transportation and accommodation in one. Other travelers op for a car rental, some even rent a 4WD to discover the nicest places in this green continent.
Renting a car is probably the best option to travel in Australia. Not only can you go to places whenever or wherever you want to, it's a lot cheaper compared to trains, flights and taxi's. Also, most car rental suppliers allow you to pickup your car in f.ex. Sydney and then drop it off in another location such as f.ex. Melbourne.
One company, named Oodles, started with car rental comparison a few years ago. Oodles started with car rental Australia and New Zealand, but then a few months ago they started as well with car hire in the United States and in England. I guess they are doing quite well renting cars online. On their website you can compare all major suppliers, such as Avis, Hertz, Budget, Europcar and Thrifty. It's transparent as Oodles compares the models on one side and the car rental companies on the other side. On top of that, this website doesn't charge commission of any kind, thus, prices are the same as the dealers itself. Oodles offers realtime data, so you won't get to see different rates on the dealers their website.
So, if one day you decide to visit Australia, you know where to rent your car and how to travel around. I almost forget to tell you that you pickup and dropoff your car in one of the many offices all over the continent. And one last thing, don't forget to visit Tasmania, it's an awesome place.