I'm not a big cola person, but when I do its ALWAYS Pepsi. Coke is friggin acid. Vanilla Pepsi is WAY better than the Vanilla Coke. The vanilla isn't as strong. The Vanilla Coke taste like a cream soda almost.
I finally tried Vanilla Pepsi today. It was alright. Reminded me of Pepsi, but with a vanilla flavor (DUR). I don't think I'll drink it on a regular basis...I prefer vanilla coke IF I want to drink that...only cuz it reminds me of a mixed drink LOL!