I'm trying to decide if I should cancel my Chase CO OnePass Plus MasterCard now (would have to pay my first annual fee on 2/14/12) with the hopes of possibly getting the Chase MP Explorer card later. I signed up for the CO card before they set the requirement that if you'd been a cardholder before, you can't go for the Explorer. I also have the UA Select visa (3x UA/CO, 2x Gas Groceries Restaurants, 1x everything else). I wouldn't need to cancel that one if I wanted to apply for the MP Explorer card later, would I? I'm still too new to the card churning game and don't fly often enough to want to pay the annual fee on 2 cards for the same airline. Then again, who would?!? Any suggestions?