One credit card? Or many? How to decide

Visa? MasterCard? American Express? All of the above and more? When it comes to credit cards, there are pros and cons to owning just one card or playing with a full deck. Depending on your fiscal self-control and other factors, there's a winning hand for you.

Playing solitaire: Using just one credit card
Having just one credit card means less temptation to get into trouble by overspending, says Rod Griffin, director of public education at credit reporting agency Experian. Getting out of trouble is easier, too. "If you do become over-indebted, you can stop using the card, start paying it down and get out of trouble more quickly."

For most people, managing one card is easier than keeping track of multiple cards -- and bills. "You have only one bill to worry about paying on time," says Can Arkali, principal scientist at the credit scoring company FICO.

On the other hand, having only one credit card restricts your access to some services and merchants, Griffin says. If the store or other provider doesn't accept your card, then you can't charge the item or service.

Also, if you max out that one card and then have a legitimate emergency -- not a fabulous sale on your favorite shoes, of course -- you're out of luck, says Dara Duguay, executive director of Credit Builders Alliance.

As for building a credit history, it's possible to do so with only one credit card, but it takes longer. "If you use one credit card well, keep the balance low, make a small purchase every month and then pay the balance in full, it will help you build a strong credit history and build good credit scores," Griffin says. "It may take longer than it would having two or three credit cards. But you can have very good credit scores with just one credit card."

Credit Builders Alliance recommends three credit lines to build a credit history -- a mortgage, car loan and a credit card. A young person who doesn't have a mortgage or car loan might want to consider a second credit card to help build that credit history, Duguay says.

Full deck: Using multiple credit cards
Having multiple credit cards can give you plenty of options in case one is lost, stolen or not accepted. But a wallet bulging with credit cards can trick you into thinking you're flush with cash.

If you have good self-control, having a number of cards with little or no balance may help your credit utilization ratio, which is simply your total balances divided by your total credit limits, Griffin says. The more available credit you have, the lower your utilization ratio will be, assuming you don't spend more -- and that helps your credit score.