coca-cola light is diet coke, more or less. minor production differences will make tastes more evident.
khanada -
"Coke II, or New Coke, was last produced in the United States by the old Chicago bottler HerbCo. (Plants RX1, RX2, RX3, MD) When they were bought out by Coca-Cola Enterprises, production was stopped. Rumors swirl that it is still made in California for export only. It is still sold in Micronesia (www.kospn.com) according to their website."