If the 5D III does everything we hear and expect and is the 22mp camera with the better AF, somewhat better high ISO noise, etc., how much are you willing to pay? And, how much can you afford to pay? And, how much do you feel the feature set is worth?
Are you a professional paid photographer or a hobbyist who does not make money from photography? How do the price and your photography income (or non-income for hobbyists) affect your choice of whether or not you will buy the camera?