This really makes me appreciate Aeroplan for having redeemed 24 F flights on SQ until they stopped allowing premium redemptions through *A.
For 100,000 SPG points (which I had millions of) I would get 120,000 Aeroplan miles, and this was good for a R/T F ticket from N.A. to Asia - over both oceans with two stopovers in addition to the final destination. And with up to 10 flight segments - basically a RTW in F.
Now that SQ F is not an option, I fly LAX-ZRH-BKK-ZRH-LAX on LX in F.
FWIW, I think LX is every bit as good as SQ in F.