Some advice: take onboard advice you get on FT, but ultimately do the hard yards and work out what is best for you based on your travel pattern, goals (status, certain types of redemptions) and preferred redemptions.
When comparing I do the calculations and plug the information into a spreadsheet based on how many points I will earn from my most likely travel pattern, the status I want to achieve (if any) and what sort of flights I want to redeem, and the amount of taxes you need to pay on redemptions. Then it might be clear which program is best and the choice will be obvious (or it might not be clear, in which case it probably doesn't matter, but then may be worth looking at intangibles such as ability to waitlist for redemptions, fees for changing redemptions, etc).