Dear Liz: Should we get a rewards card? We have excellent credit scores. I’m a stay-at-home mom and my husband has a good, steady job. We spend about $6,000 a month with our debit card or automatic drafts from our checking account. I think our family should have a rewards card. My husband disagrees and says that for the amount we spend each month, we wouldn’t rack up any points. Is he right? If we should get a card, how do we pick the right one?

Answer: If you’re positive you’ll pay your credit card bill in full every month, you would be great candidates for a rewards card.

Right now, you’re passing up at least $720 in rewards annually. That assumes you’d be getting a card that rebates 1% of your purchases. With excellent credit scores, you could qualify for even richer rewards cards, since those are reserved for people with the best credit.

The simplest rewards cards are the cash-back cards, which rebate a portion of the purchases you make. Card comparison site NerdWallet recently named the Chase Freedom card as the best cash-back card with no annual fee. The card gives you a $200 sign-up bonus if you spend $500 in the first three months. All your purchases earn 1%, and you can earn a 5% rebate on certain categories of spending that change every three months.

NerdWallet also recommends American Express Blue Cash Preferred, which offers a $100 bonus if you spend $500 in the first two months. Supermarket purchases earn 6% cash back, and spending at gas stations and department stores earn 3%. Everything else earns 1%. “There is an annual fee of $75,” NerdWallet.com notes, “but your rewards easily offset the cost. In fact, $25 in groceries every week is enough to make up the difference.”

There are other types of rewards cards that earn points or miles for travel, or discounts on gas. You can learn more about these cards and shop for offers at NerdWallet or one of the other card comparison sites, including CardRatings.com, CreditCards.com and LowCards.com.

It’s important, once you get the card, to keep track of your spending so you never accumulate a balance you can’t pay in full. Always pay your account on time, since a single skipped payment can knock up to 110 points off those excellent scores.