The best credit cards are the ones that offer 0% interest or the ones that offer you cash back for your purchases.  But, these offers are always the ones in big, bold letters and one must always beware and read all of the fine print as well.

For instance, I can guarantee that the offer on a 0% credit card is for only a limited time, usually the first six months or so.  After that time is up, you will end up paying a much higher rate than if you had just signed up for a lower interest credit card.  The company makes their money from your interest payments, so no the no interest offer is a gimmick.

Cash back credit cards sometimes have a high spending limit you have to exceed before you start getting cash back.  They also sometimes have a high annual fee and one must weigh what will be spent on the card versus these fees and decide whether it is worth it or not.

Like anything else, buyer beware.  Read the fine print and be sure you are informed before making your decision.