That is exactly what I do. Use my cc's for everyday purchases to ge tthe rewards. It is really just like using my debt card because at the end of every day I move the money I charged from the main cking to the "savings" cking. And yes, I agree....having a set amount of money in my main acct helps to keep me on budget and save more/spend less.
Starting Score: 634 EQ-FICO (4/20/12) 579 EX-FAKO (4/30/12) 629 TU-FICO (5/6/12)