SEL-SYD-SEL flights are pretty frequently operated with a 777 with 28 seats in Business (no bar in the front galley area, restrooms at the rear of the cabin) - most of these aircraft do not have AVOD.

Re. AVOD welcome screens - there are 2 different welcome screens, but IMHO it is still the same AVOD system.

I am a great fan of flying from FRA/LHR to AU with OZ: service & food are great, overnight on the way back from SYD (I am always staying at the Hyatt Inchon) is an additional bonus helping me with re-adjusting to European time. And their Business fares are really low.