Hi everyone, thanks in advance for your help and view on my situation below. I'm moving from London to New York in January to start a new job. Thanks to the reduced TP thresholds on BA, I'll have BA gold / OWE Dec'22 til Feb '24. However, as I'll fly 3-4 times a month in the US to destinations not served by AA (usually served by DL) I'm wondering what to do with the VS/DL side of things, specifically whether to credit a couple of upcoming VS flights to VS or to DL, and when I move to the US, whether to credit DL flights to VS, or to DL. As I'll be OWE next year, but almost certainly won't re-qualify in 2024, I'd want to maximise Oneworld use in 2023, and only use DL when absolutely necessary.

1. What is most important to you in a frequent flyer program (FFP)?
Ability to upgrade (whether free or for a reasonable amount of miles), and ability to book reward seats.

2. How many miles do you usually fly each year? How many flights/sectors?
30-40 sectors short haul US next year (work) plus 5-6 round trip transatlantic flights (leisure).

3. What fare class do you usually buy?
Economy for work, sometimes premium economy for pleasure.

4. Are you able to choose your airlines and/or class of service? Do you travel for work and/or pleasure?
Ability to choose airline within reason (cost).

5. Which routes do you fly most often?
Domestic US east/central (work) and transatlantic (leisure)

6. What is your home airport?
Soon to be NYC area (EWR/JFK/LGA)

7. Do you have status in any FFP? What is it? How miles do you have banked in each FFP, if any?
BA gold / OWE from Dec '22. ~400K avios with BA. ~140k VS flying club points, VS silver. Delta account with 5K miles.

8. What are your preferred airlines, if any?
BA, VS, AA, DL.