Good deal.
As mentioned before, AA miles seem to get more bang for the point than DL miles. The deals also seem to linger between initial search and follow-on searches for one or multiple tickets until booked. With Delta, often times the initial search says X miles and you often dont see that cheap deal on subsequent searches or if you want to book multiple passengers.
So, we rarely use the AMEX card anymore and use the AA Advantage.
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