People who know me in real life know that I have a serious dislike of Pepsi (bordering on insanity, I'd say). I hate Pepsi with a passion, it's disgusting, it's vile, it's only popular because of frito lay, et cetera. I cringe when I see people drinking pepsi, and much prefer Coke. I actually refuse to drink Pepsi. Ever.
Anyways, I don't drink soda anymore, anyways, but when I did, it was coke.
Edit: I know I also sound like a dick, but to take it further: When I'm at restaurants, I always ask(ed) "Coke or Pepsi products" (As in, which do they have). If they said Coke, I said "I'll have that," and if they said Pepsi, I always snarled or made some other unpleasant facial gesture and either said "That sucks," or "I'll just have water, then." I also hate Mountain dew 🙁 Although those new flavours of Mountain Dew are good.