HKG to SYD on QF is an A380 on some days.
QF 744 in J is being refitted, I'm not quite sure of what stage its up to but some are SkyBed mkI (lie flat slope), some are SkyBed mkII (flat as on A380).
A330 is SkyBed mkI.
Using your 241 from UK to HKG/SIN is good.
CX is another option from HKG to Aus/NZ.