To be specific, Grossman, a 49-year-old entrepreneur who calls suburban New York City home, has about 45 credit cards.

The no-annual-fee Bank of America Travel Rewards credit card gives 1.5 points per $1 spent; redeem points for any travel purchase.

That's a good bit different from how most credit cards work, and it could make monthly budgeting a lot easier. The Upgrade Cash Rewards Visa® also earns a solid 1.5% cash back on purchases. Still ...