I really can't tell the difference between the two. To be honest, I'm more convinced that the whole Pepsi vs. Coke thing is just a friendly rivalry to keep both products at top of mind with consumers and weed out any other brands from gaining prominence or popularity. The only cola I though was noticeably bad was the SodaStream brand. However, all of their syrups use Splenda in them, so that might have been part of the problem.
Coke is definitely the best. I once ate something bad and was advised to drink coke as it will clear you out.I did that and within a few hours i was back to normal. Ever since then i have been in love with coke and convinced of its miraculous powers.
I have to go with Coke I can't do pepsi unless I have no choice. But if I have a choice it's usually coke second choice is dr pepper.
I don't drink Coke or Pepsi, you are pouring sugar down your neck, it is very unhealthy. I think one can of Coke contains something like 65g of sugar, that's like eating two big potatoes or a big bar of chocolate. If I had to choose I would opt for Pepsi because it reminds me of holidays when I was a kid, Pepsi was always served on the plane.