The "Sydney incident" was an Emirates 777-300 and it was in Melb.
My (then, now X) girlfriend was an EK
F/A who ferried the bird back to DXB
(from Singapore, where it stopped to change crews). Even then, it flew back with only a crew of 2 on the flight deck and 2 F/As (had to have one F/A for each front exit).
flew a bunch of parts and a big RR
Trent down and it took several weeks to repair.
The CF6 series on 767s, DC-10 and A-300s have quite a history of uncontained failures, but I think generally the GE90 is quite good, as are the RRs. P&Ws seem good too.
Have you seen the "making of the 777" video? The engine cowling on those things are amazingly strong... the engine can all but explode and the fuselage is still pretty well protected. Great airplane.