I still prefer crossing large expanses of water on four engines as opposed to two. Coincidentally only just yesterday I read a former A330 pilot (now flying the B747-400) admit exactly the same. But like it or not the B777-300 does the job just as effectively, if not better, than a B747-800 does, so I can't see there being a glorious future for it - unless a twin ends up ditching in an ocean because of a double and unrelated engine failure. That would certainly have all the punters in a mad dash to try and book on what quads remain.