you can basically double your rewards just by using the checking account and paying your credit cards with automatic bill pay.
" The Delta SkyMiles World Check Card earns 1 mile per $1 in PIN Point of Sale and signature-based purchases and 2 miles per $1 in direct Delta purchases. Only PIN Point of Sale and signature-based purchases (including small dollar purchases that do not require a signature), Internet purchases, phone or mail order purchases or [color="red"]automatic bill payments[/color]
qualify for mileage earnings. Cash advances, cash portion of a PIN POS sale with cash back, ATM transactions, payments for stored-value cards, wire transfers, money transfers, quasi cash, or traveler's cheques do not qualify."
For example, charge $1,800 on Chase earning 1,800 points every billing cycle with Chase.
Now pay SunTrust automatic bill payments the checking account pay Chase $1,800 earning 1,800 sky miles.
Which if done for the next 12 months ... will be 21,600 skymiles with Delta - almost a free flight from just one bill and 21,600 points with Chase - 270$ if redeemed for travel