Asiana and Aegean are great for earning *G. The important thing to note when picking any FF program is:
- their burn rates (not good for some sectors)
- mileage expiry policies (if you do not burn miles regularly, make sure you check what their expiration policy is.)

You may also want to read:
http://boardingarea.com/blogs/unroad...the-right-one/
http://boardingarea.com/blogs/unroad...y-hubs-matter/