I accidentally got BA Silver a couple years ago and since I've been just managing to hang onto it, but I'm not sure it's the best airline's FFP for me, especially since the fees for flying in and out of LHR are consistently crazy. I'm pretty sure at least that oneworld is the best alliance for me since it has the best South America coverage.

1. What is most important to you in a frequent flyer program (FFP)?
Lounge access, priority services. Upgrades happen so rarely for me that while it would be a perk, it's not one I'm familiar with or banking on.

2. How many miles do you usually fly each year? How many flights/sectors?
Not sure but probably around 25k miles, give or take. Under 25 flights. In the 2014 calendar year I did exactly 25 segments, if I'm counting correctly.

3. What fare class do you usually buy?
Cheapest, but keeping an eye out for premium economy that seems worth it.

4. Are you able to choose your airlines and/or class of service? Do you travel for work and/or pleasure?
I travel for pleasure so I can always choose.

5. Which routes do you fly most often?
I don't think there are any particular routes I fly most often except maybe NYC <-> MIA and NYC <-> SFO more than once a year. My flying is more from NYC to Europe and then around Europe, to South America and then around South America, and back to NYC. Or in some other order. I usually fly into Rio in South America, no consistency in Europe.

I'm thinking of spending more time in SE Asia, I'm not sure how much this changes things.

6. What is your home airport?
JFK, sort of. I'm in NYC maybe 4-6 months of the year, the rest abroad. Trying to spend even less time in NYC/the US.

7. Do you have status in any FFP? What is it? How miles do you have banked in a FFP, if any?
BA Silver, and probably about 35k miles in there.

8. What are your preferred airlines, if any?
I don't think I have really preferred airlines but BA is nice, Finnair and Iberia seem nice from my limited experience with them, and American seems to be the only tolerable US domestic airline.

Thanks in advance for any help!