US Airways is now OneWorld right?

So if I flew primarily American, I could still get points for US Air flights out of DCA correct?

(Formerly a big United guy when I lived near Chicago, but looking to switch possibly.)

I'd be flying DCA->PIT and DCA->SFO often.

- what is your definition of best?:

I will be flying primarily coach, I'd like to acquire status quickly and use it to redeem for upgrades to Economy plus on short trips or business class on longer trips.

- do you value miles/points (or equivalent) for redemption over gaining status?
I can have my work book coach class tickets, so upgrades are more useful

- do you fly enough to gain any meaningful status?
I just missed United Silver last year. I will probably fly more this year.
- what do you want to use the miles/points for (award, upgrade, hotels, what ever)?
I'm primarily focused on upgrades since work pays for hotels etc
- what sort of flight award is of interest (destination, class of travel)?
Usually vacations. For example I did an open jaw into prague, out of amsterdam with my points this summer.
- are you interested in topping up by paying cash for miles?
No
- which airline and where do you normally fly?
I normally will fly to SFO, and PIT a couple times a year.

- are you primarily a leisure or business traveller?
Primarily business
- where do you live?
Washington DC

- do you have other ways of earning points in the various programs, e.g. credit cards, shopping, etc,?

I churn cards, yes, but usually once/twice a year.