Delta Amex Gold upgrade to Platinum question
I currently have a Delta American Express Gold card, since spend on the gold card no longer qualifies for the MQD waiver I was thinking of upgrading to Platinum. I am currently 4/24 with Chase, and really don't want to use the final slot for another Delta card, but I see some lucrative sign up offers for the Plat card currently. I paid my Gold cards annual fee in November. What advice can you offer me so I can get the best bonus for upgrading? Thanks in advance for your help!