Hello everyone,

So I have many miles accrued from applying for various credit cards and I'm looking for the best way to redeem them for flights them using the least miles possible (i.e. flying economy, off season, etc). I would like to take a trip to Asia (from California). The miles/points I have are spread out in the following:

-American Express membership rewards
-Chase ultimate rewards points
-American Airlines miles
-United/Continental miles

Just at first glance, it seems like American Airlines has the best deal (only 50k to go to Japan, where the others seem to be 65k). But I was wondering if anyone has any advice for use of the chase and amex points and which how to get the best bang for the buck. Thanks!!
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Sorry, here are the specific miles I have:

-American Express membership rewards - 75k
-Chase ultimate rewards points - 50k
-American Airlines miles - 150k
-United/Continental miles - 60k