Originally Posted by
tvtd
For this reason alone I'm leaning toward either the unbranded Amex Plat Business card or giving it a run for a year with the aforementioned personal Ameritrade Amex Plat and keeping my personal DL Amex Plat for the MQM bonus. Lounge access alone with the unbranded Amex Plat is really hard to argue with. Almost a no-brainer.
When comparing personal vs. business Platinum remember that the business
does not earn 5x on flights unless booked through Amex Travel. The personal earns 5x on flights booked directly with airlines, so if you like booking directly with Delta that is a big reason to go with the personal.