Two comments:
1. There is no such thing as the "best" frequent flyer program, any more than there is the "best" automobile, significant other, or dinner menu. It depends on your travel patterns, your budget (some programs reward high spenders much more than bargain-hunters, with others the differences are smaller) what you want in terms of rewards, and more.
2. You're not the first writer to have asked for FTers' help. Those who have gotten the most cooperation have given their real names, have identified the publication they work for where possible, and if they free-lance have pointed us at previous travel-related articles they've written. If you could do the same, it will make a big difference in how people respond.