Go for SQ A380 in R and forget LH...
Dan,
I started my MR transfer to SQ KF for the way back SIN-Europe-USA, just FYI SQ R allows stopovers in Europe even on One ways, that's what the SQ KF agent told me, you can fly A380 SIN>ZRH, CDG or LHR STOP FRA>JFK, I'm working on it, there were several SIN-CDG R available and open FRA-JFK R also several open, I think it is SIN>FRA thats not easy to get.
But hey, everyone was in the FCT except me, I don't want to be left out, so i'm checking it out for ua 67K