I just booked this route a few days ago, leave Sunday. Ended up doing EWR - SFO - SIN on the way out. No F but I seem to prefer that route for a DreamLiner on the 15 hours UA1 leg.. On the way home I booked SIN - HKG - EWR and used a GPU on the first leg to get out of 2-4-2. Primarily booked the route to get home mid day, but got to burn a GPU.
I was considering ANA through Norita just for that little sushi bar where they overflow your saki into the wooden box! Alas I'm hooked on dollars on UA metal to secure GS.