While I was in Brisbane on Holiday during November, I visited many restuarants and on the whole could not find fault with any, but two stuck out for me as being fantastic.
Mount Cootha Resturant
http://www.brisbanelookout.comThe meal, service and view were outstanding and it was a good price, especially the set menu offering a 4 course meal for around $50
The second was Jo Jo's on Queen Street
http://www.jojos.com.auI had a Reef and Beef and it was perfect, my wife had an italian Pasta dish which was also perfect.
You can print of a free drink voucher from the website.
Enjoy
Bobby