I voted Coca Cola out of these two but I used to prefer Pepsi, suppose I just go through different moods lol...
I think theres some kind of secret ingredient in Coca-Cola to make you thirsty so you go an buy more or something lol as when I used to drink it I used to always still feel thirsty afterwards...anybody else had this?
I think Pepsi's a bit sweeter than Coca Cola.
My actual personal favourite is Barr's Cola, now Americans wont be familiar with it (Its from the same company who make Irn Bru) but some english will.
It comes in big glass bottles that you get 30p refund on if you take the bottle back next time, not to mention - it's the dogs bollocks