which is better site mix concrete or READY MIX CONCRETE ?

CONCRETE WILL BE IN BETTER QUALITY WHEN LOW WATER TO POWDER CONTENT USED, IT IS VERY VERY DIFFICULT TO CONTROL WATER QUANTITY IN SITE MIX. FURTHER ALL RMC USE FLYASH AS PARTIAL REPLACEMENT. IT IS VERY GOOD IN DURABILITY POINT OF VIEW,WATER REDUCING ADMIXTURES WILL BE USED IN RMC, IT WILL BE GIVE LOW WATER POWDER RATIO, IT WILL GIVE CORRECT STRENGTH AND DURABILITY ,HENCE RMC MIX WILL BE BETTER THAN SITE MIX