My experience:
2012 2. United, CSP
2012 4. Freedom, Marriott
2012 6. Ink bold, BA
2012 9. Ink plus, PC(traded marriott)
2012 12. Hyatt
2013 4 United business, CSP mastercard(traded BA and downgrade CSP visa to freedom)
Total 11, closed 2 for two new cards.