(1) What is your home airport? (SFO, SCL, London LHR, HKG, Singapore SIN etc.)
Reply: FRA, STR, DUS
(2) How many miles do you usually fly each year & in what class? (<25K, 25k-50k, >50k)
Reply: <25K Economy
(3) What types of fares do you usually buy ? ( First, Business, Economy etc.)
Reply: Economy
(4) Can you choose your airlines and/or, class of service?. Do you travel for work and/or pleasure?
Reply: Pleasure, so I can chosse what I like
(5) Which routes do you fly most often (US Domestic, Transpacific, Kangaroo, in Asia etc)
Reply: Europe, Asia, USA
(6) Do you have FFP status of any kind in OW or other airline at present? What is it? Do you have any miles banked in a FFP? (AA Executive Platinum, QF Gold, UA 1K, LAN Comodoro, etc)
Reply: No status
(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: Maybe getting a small free flight or an upgrade.
(8) Preferred Airlines
Reply: No preference

I will only fly around twice a year only for holidays. So I wont have as much activity and maybe sometimes I won't fly with One World.

So far I think AA and BA are the best.
Both allow extending miles with minor purchases, so they don't expire as I wont earn enough miles to get something back within 1 or 2 years.

I think from what I could read AA is the best, because the miles are "worth" a bit more than the BA Avios.

Can anyone give me details on QF and IB?

Which one of these 4 would you consider?