I apologize if this is not the right forum for this question.

I am moving to Portland (PDX) and I am confused which airline to concentrate my loyalty on.

For the next 18 months, bulk of my flying will be bimonthly PDX-IND: start late night on Friday and return late night on Sunday (Want to mazimize the time in IND).

Currently I am Plat on AA, Silver on DL.

I don't drink alcohol and sleep pretty well even in Y. So, upgrades normally don't matter a lot to me.

In the next few years, I want redeem Y awards to Hawaii, Carribean, South America (Brazil/Argentina/Chile/Peru), Australia/New Zealand and of course last minute PDX-IND if required.

Any advice will be greatly appreciated. Thanks in advance.