CNBC Select reviewed popular rewards credit cards to find the best options for people who want luxury perks and premium benefits, including the American Express Gold Card and others.

We analyzed 50 major cash-back credit cards using an average American's annual budget and dug into each card's perks and drawbacks to find the best ones for various spending habits.

Nintendo adds a new wrinkle to its game-distribution system. Here's what you get with a game-key card and how to tell what you're really buying before you check out.