330-200
what about A330-200?
I have done some research,
A340-300 w/max load, passengers 287, 275 tonnes for 7200 nm.
A330-200 w/max load, passengers 293 , 230 tonnes for 6750 nm.
Both carrying 10-12 cabin crews which similar to the A330-300 in fleets,
HKG-LHR 5209 nm, HKG-AMS 5016 nm, HKG-CDG 5187 nm, HKG-FCO 5021 nm
HKG-JNB 5762 nm, HKG-YVR 5555 nm, HKG-AKL 4943 nm, etc etc. ETOPS 180/207 on both transpacific flight and Europe flights. A330-200 can fly most of A340-300 long haul operations with slightly decrease in cargo load, plus twin-engines efficient.