I have been United 1K for the past few years, but with the USAir/AA merger and their leaving Star Alliance for OneWorld, I have to reconsider. All of my miles are with United...

(1) What is your home airport?
Reply: PHX

(2) How many miles do you usually fly each year & in what class?
Reply: Between 100K and 200K, 90% on UA or Star Alliance

(3) What types of fares do you usually buy ?
Reply: Business when travelling internationally, economy when domestic

(4) Can you choose your airlines and/or, class of service?. Do you travel for work and/or pleasure?
Reply: Yes I can typically choose the airline. Class of service depends on destination. Most of my travel is for work.

(5) Which routes do you fly most often
Reply: PHX-HKG 4 or 5 times annually. PHX-LHR/FRA 1-2 times annually. PHX-SJC/DFW/MSP/LAX/AUS/??? (Pick one) 10-20 times annually

(6) Do you have FFP status of any kind of OW or other airline at present? What is it?
Reply: UA 1K

(7) What is most important to you in a FFP? (upgrades on travel, priority services when flying the airline, extra baggage allowance, good award redemption rates, better award access, free - discounted lounge access, etc.)
Reply: In order of importance to me: Priority check in, upgrades, award access and rates, lounge access

(8) Preferred Airlines
Reply: Relatively open. I am usually more concerned with upgrades/priority/good service/hardware on the long international legs. Makes me think Cathay?

It was pretty easy to pick United before. Priority with UA meant I got better service and upgrades on their hardware flying to HKG frequently. USAir as a code share partner let me earn miles domestically.

Now I'm not sure. Would any of the airlines in OW do a one-time status match? I'm about to book PHX-HKG, so that may offer some enticement.