With all the experts on eating in Sydney, can someone recommand

a restaurant in the following categories? I have some friends coming from U.S. this weekend. I'd like to take them to a decent place to showcase Sydney.

1. Chinese, $30-$50 per person
2. Chinese, below $30 per person
3. Asian food, e.g. Korean, Japanese, South Asia, $30-$50 per person
4. Asian food, e.g. Korean, Japanese, South Asia, below $30 per person
5. European, e.g. Greek, Italian, $30-$50 per person
6. European, e.g. Greek, Italian, below $30 per person

Thanks in advance.