I choose coke, but I prefer Pepsi because it's sweeter. Odd, I know. I'd drink Diet Coke instead of Diet Pepsi, though.
I don't usually drink soda, but whenever I get the itch to drink a cola, it's COKE! lol Pepsi doesn't taste too good to me, the after-taste kinda tastes funny, like it has aspartame in it and I don't like that..