Sodas with "Pep" in their names are the superior choice. Though I really only think Pepsi tastes slightly less like malted battery acid than Coke does.
Me too, it makes my stomach turn! I'm a DP man. If there aren't any other sodas, I drink water. I drink water most of the time anyway, but I have to have my DP in the morning just like people have to have their coffee and such.