I am scheduled to take more Delta flights out of Seattle then AS in the future. I think that trend will continue.
In the interest of starting to acquire SkyMiles ( my current balance is 603

) I'd like to boost up my balance.
Is there any advantage to getting a DL AmEx card
before the 2015 SM changeover?
( I did peruse the 850+ posts thread on the 2015 program...but couldn't find an answer to this question.)
Thanks for any insight.