You honestly dont need either. Eat less and ride a bike. Dry beans are like a dollar, and there is usually some reasonably cheap seasonal produce at the store. You could spend like 2.50 for a 12 oz bag of chips or you could spend 2.50 on a pound of expensive produce (and get 4 whole ounces more! But usually produce is not that much per pound anyway so at that price you're probably getting more than a pound.)