Definitely my SPG card due to the redemption value of the points. Since I stay in SPG hotels primarily when I travel for work (weekly) and when I travel for leisure.
Mine is Hyatt. Two free nights anywhere after min spending, additional free night every anniversary, Platinum level for priority check-ins + free wifi+ few upgrades, and plus since I travel to Las Vegas alot, my status on Mlife(MGM properties) has upgraded to Gold which also comes w/ great perks.
