QFF vs KrisFlyer vs AsiaMiles - Which one for a CC user

[kinetic_skink]

Hi,

Following my recent trip to the USA I started to do some research on FF programs, and then some more, and then some more. I think I have probably overresearched, and have narrowed down to these 3 but just can't figured out which do go for. I have signed up for most FF programs to look at availability and such

My situation is one where I am looking to earn points predominantly via Credit Card, less so for racking up lots of points from flying.

Flying habits are a trip from Perth to the USA every year or two for two people, with a few domestic flights scattered around.

KrisFlyer
I have 50K points with Velocity and 250,000 ANZ points (83,000) KrisFlyer points already
Apparently good value with redemption (About 350,000 points and $2,500 taxes 2 people business return to USA, taxes seem quite high??)
Moderate availability on reward seat, some trouble finding seats.

AsiaMiles
Again can transfer ANZ points across at same rate
Apparently very hard to get any status and have to sign up with MarcoPolo (paid) to get it
Looks about same redemption rate as krisflyer, 350,000 points but this time only about $400 tax
Always seems to be seats available on CX flights for rewards

QFF
Can't transfer in Points in. Availability for flights al seems to be through Cathay anyway and requires more points (about 500,000 for the 2 people business on Cathay)
Potentially able to earn more points locally on CC? - This I am not sure about.

So really it comes down to KrisFlyer which I heard good things about and can carry my virgin points from, but there alliance doesn't seem to share seats much from what I can tell playing with the booking tool on there website and higher taxes, or AsiaMiles/QFF - In which case it comes down to earn/burn experience based mostly on CC spend

Any thoughts/feedback very much appreciated

 

[cove]

Kris Flyer works well for going out of Perth to London or Los Angeles. We stop at the Crowne Plaza in Changi so that helps us avoid the 1am departure.
We will do this 4 or 5 times each year.
Be aware that Kris is quite unsuitable for flying in economy as the fees are too high compared with just buying a ticket.