A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
The classic suggestions would be SQ or CX with connections through their respective hubs. For business class, I would pick the Cathay lounges (are they still undergoing renovations?) in HKG over the Singapore lounges in SIN, although I prefer SIN as an airport. Look at seat maps. I hate 2-3-2 in business class.
Other good choices would be ANA through Tokyo. KE and OZ through ICN go far out of the way.
Are you collecting miles already? What alliance? *A for TG? If so, note that CX is oneworld.