
Well, honestly the answer is BOTH. The key to being financially independent is to make all you can and save all you can.
But when it boils down to it, I say things like using coupons, when looking at dollar per dollar amount is more benefial. Here's why: You don't have to treat it as income. It's not taxable. Say you save $1,000 in the same amount of time it would take you to earn an extra $1,000. All things are equal (providing that savings is on things you truly need.) You don't have to pay state or federal income tax on that.