Capie, you need to choose your focus airline.
Think about where you want to take your vacation. What airlines have flights there from where you are? How many miles will it take to get there on each of those airlines?
Do you already travel a lot on a particular airline? You live near St. Louis, which is a TWA hub? Does that airline have flights to your vacation destination? You may want to consider the airline at a local hub in case you change your vacation destination of choice.
Even with the presumed AA buyout, your TWA Aviator miles are presumed to be convertable to AA.
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He who dies with the most miles ... is dead.
[This message has been edited by ontheroad (edited 03-09-2001).]