I'm working toward Platinum with Delta and I'm hoping to make it there with spending on my AMX Delta cards. I have two platinum cards, personal & Business. I've had the personal card since the summer and just signed up for the business with the last bonus offer. I'm 10k away from the 25k spend bonus, which would give me 10k MQM. The question I have is do I need to spend this amount on the personal card alone, or can I send 5k on it and 5k on the business, which would give me the signup bonus and the 25k spend bonus?