Uh Jscott you saying you didn't have a rewards card all these years? wtf!
Yea the Delta card isn't as great as it used to be, also consider the foreign transaction fee's of any cards you consider. Might be better off just getting a cash back card and using the $ rewards to buy flights rather than being tied to delta for reward flights.
https://www.yahoo.com/travel/the-top...218818247.html might help you.