The only thing caffeine does to me is make my tummy hurt (if its in coffee). So I stick to Starbucks decaf specialty drinks (Mocha Frappuccino or Pepperming Mocha).

If I drink soda, I prefer Pepsi or something orange flavored. I drink Sprite so much for my stomach, I don't count that as a "favorite".

My "addiction" is chocolate. When I get upset it does an excellent job in calming me down. Really, any good quality chocolate will do...