Diners Club (Citibank)

Pros: None
Cons: Non-responsiveness of customer service

Due to a relationship between Diners Club and the company I work for, $929.93 of airline and hotel expenses, which I paid with my personal credit card (NOT Diners Club) on business travel in December wound up being "reimbursed" to my (inactive) Diners ...

Pros: MasterCard network of retailers; Global Airport Lounge Access; Foreign Currency Delivery Service
Cons: No More 62 Day Billing Cycle; Lack of Upgrade to Carte Blanche

I've been a loyal DC member since 2001 and average between $3,000 and $5,000 a month in purchases. I am so loyal that this is the only card that I EVER use. Today I called to upgrade my card to the Carte Blanche card and I was told that I would have to close my existing account and apply for the Carte Blanche card separately. The application and approval process would take 15 - 30 days. This has to be the worst policy in the credit card industry. Why would you want to alienate a good that pays their balance in full every month? Other companies are happy to upsell you to another card that has a much higher annual fee ($95 to $300). Needless to say, I am looking forward to making the American Express Platinum card my card of choice. I will miss many of the benefits associated with Diners Club such as access to airport lounges around the world and the foreign currency delivery service.