They both taste like horse piss. Real Coke is made from cane sugar not corn syrup. That is why I buy Mexican Coca-Cola.
In Canada there’s a product called Pepsi Throwback that’s made with cane sugar. Regular Coke and Pepsi here are a mix of can sugar and corn syrup.
One product available on both sides of the border that you might like is Jones Soda- their entire line is sweetened with cane sugar.