Just remember, FRI SYD-JNB-SYD services do not offer First Class and are operated by QF's 2-class 747-400. Although minor (considering there are 4 other services with F), nevertheless, something to take note of.
Also watch that QF127/8 SYD-HKG-SYD 747-400 (F/J/Y) service is often replaced by 2-class 747-400s or 747-300s.
Cheers