Apologies, I've managed to get through just 10 pages of this thread

. Hopefully it hasn't already been done
I wonder if there's any kind of table out there that compares the various *A Programs, listing their attributes side by side for easy comparison.
I'm new to this. Not much of a heavy flier... Had a BMI credit card but never earned
that much on it. As such I'm more interested in making an eventual redemption than any kind of status, i'm after my miles lasting a long time (it'll take me forever to get enough to be able to redeem them) and the ability to earn off any *A carrier. I suppose I should look at earn/burn ratios, but I'll always be flying in the cheapest economy option possible.
I already have membership of the TAP and TAM programs, but I've never used them. If I fly anywhere, it'll most likely be to the US or to Brazil. Looks like US Airways could be the one for me. (Flew once or twice a year on US Air when I was younger...never saved the miles, damn)