If you want a really great burger,
spend a little more, and order an Angus Boy. You will get Austrailian Beef. It is of better quality than the usual ones. If you want better quality than that, you can take a trip to the State of Texas in the USA.
There is also other very good food here.
Please keep in mind that a restaurant that serves great food and is busy, that you might have to wait a little longer for your food than otherwise. If you want quick food, cook it yourself.
The staff has been always friendly and attentive to me.