I had the Delta AmEx Plat for many years, then got the Delta AmEx Reserve last year, planning to cancel the Plat. They gave me a good SkyMiles bonus for keeping the Plat, plus I collected both 2,500 MQD boosts at the beginning of this year. However I did give up the Plat card when the renewal came up a month ago. I’ll take my chances on the MQD next year.