Coke. Definately Coke. When I drink Pepsi, it's a lot more fizzy than Coke, so it bugs my nose. Also, I don't like it when companies make commercials where they clearly point out the competition and say "We're better than them!" Pepsi did that for a while, like with that commercial where the hard-core Coke fan drinks a Pepsi then changes all of his Coke merchandise to Pepsi.