So I'm trying to work out which of the options to go with for Star Alliance and SkyTeam FF options. Who should I join? I'm already BA for One world.

1. What is most important to you in a frequent flyer program (FFP)?
upgrades, priority services, baggage allowance, good award redemption rates, better award access, lounge access, etc.
>>> Reply: Lounges and Priority services

2. How many miles do you usually fly each year? How many flights/sectors?
less than 25000 miles, 50000+ miles and 20-25 flights, etc.
>>> Reply: Over 100,000 and 30+ flights

3. What fare class do you usually buy?
first, business, premium economy, economy
>>> Reply: Prem Economy when avail and international, Business for longer when not available, Econ for shorter when not available

4. Are you able to choose your airlines and/or class of service? Do you travel for work and/or pleasure?
>>> Reply: Mainly work, ocassional pleasure. I have full choice - I make the bookings.

5. Which routes do you fly most often?
transatlantic, domestic USA, intra-Asia, etc.
>>> Reply: YYZ - LHR, DXB, KUL, HKG, and several cross border to US with maybe a couple inside Canada,

6. What is your home airport?
>>> Reply: YYZ

7. Do you have status in any FFP? What is it? How miles do you have banked in each FFP, if any?
>>> Reply: BA Exec - Silver Status Aeroplan just a handful of miles 4000 ish on account at the moment.

8. What are your preferred airlines, if any?
>>> Reply: BA, Cathay, Emirates, Etihad and Lufthansa,

Recommendations welcome.