Hi everyone,

I'm doing an one off flight with Delta soon: YVR-SEA-HKG and return, roughly 15000 miles. Most of my transpacific flights are on CX, and other Oneworld partners. I am Marco Polo Gold, and statusless with Star Alliance and Skyteam. I understand it would be useless to credit them to my China Southern account given the fare class.

I'm torn between which program to credit these miles to.
1) SkyMiles
2) Alaska Mileage Plan

Delta pro's:
- 100% earning mileage
- Crossover Rewards with SPG [ < 10 nights a year, not a lot]
- Possibility of status match to Medallion Gold or at least Silver
[thus 25% or 100% bonus miles, lounge, EC seats, etc for my next 6 segements]
- Miles last for lifetime, no expiry

Cons:
- I don't foresee myself traveling anymore on Delta or Skyteam in the short term
- MDQ requirement starting next year that does not apply to me, but I understand
2015 SkyMiles Program....earning mileage will be based on the ticket's $$$ instead of miles flown
- Devaluation of the SkyMiles program and increased mileage needed next year
ie. a transpacific flight in Y would require 90,000 miles I think?


Alaska pro's:
- 100% earning mileage
- the ability to credit my CX flights to Alaska if needed (hopefully, probably not..to maintain my MPC status)
- ability to redeem CX and other partner's flights.

Cons:
- Mileage expire or at least need a crediting activity every 24 months.
- Statusless on my upcoming 6 Delta segments.


What do you FT experts think? Anything else I'm missing between the two?
Thanks in advance!