It doesn't taste that different in every country (I've had it in most continents and quite a few countries). For whatever reason I still massively prefer regular coke to most of the other mainstream suppliers. I do like some small batch niche cokes though. Strangely as a kid I drank loads of diet pepsi, but I never drink diet soda now, and I probably only have 1 or 2 cans of coke/month on average.