To the OP, go with CX over SQ, the MPC is a better deal overall than KF. Make the switch and don't look back, Delta won't miss you, so don't sweat it. Living in SE Asia I stuck with DL as long as possible, but the reduction in SWUs from 10 total to 4 and being required to buy B fares to upgrade and get the mileage bonus just was not worth it, along with the fares going higher and higher.

Took my first flight on CX MNL HKG ORD in BE last week and loved it. The difference in service between the asian carriers and the US is like night and day. Try it, doubtful you will regret it.