People choose coke due to marketing and image and not because of the taste, coke are the best marketers in the soft drinks business, if they were to actually be blindfolded and sat down to do a taste test with 10 different cola type drinks on the market, coke would probably be average at best. its mediocre taste and too gassy, apparently the fact that it is too gassy is supposed to be refreshing as the bubbles pop in your mouth. Load of nonsense though.
Pepsi > Coke
Sprite > 7UP
Fanta > Tango