LAX-SYD on United isn't an easy redemption either, but Qantas is notoriously stingy.

Best Avios redemptions in business class are band 3 redemptions (when it's still double and not triple). North America excluded since they register as First class at quadruple miles

Pricing is outdated but maps are fine

http://www.flyertalk.com/forum/briti...ing-bands.html