Coke. Was that really a question?
I really like vanilla coke. I like those newer soda machines where you can have like 20 variations of Coke (or other soda). I like flavor exploring there as well. Raspberry Coke, who'd a thunk? My all time favorite flavor for soda is something that is no longer made and not sure why, but Coke had a Black Cherry Vanilla Coke that I found amazing. As much as I like Coke, I'm also a fan of Pepsi, RC, most root beers, most ginger ales, most orange soda, most cream sodas, most grape sodas, most white sodas (Sprite, 7-Up). Not a huge fan of Dew or Mellow Yellow, but would drink them. Pretty much hate diet soda of any kind.
Sprecher and the other gourmet soda types remind me of gourmet vapes. Yes, they are very good, but they seem overpriced to me.
The really odd thing to me is that if I get soda, I rarely get it by 2L and only occasionally get it by 12 packs. So, that leaves 12 to 20 oz bottles or 1 liters. And the odd thing is in almost every store I've been in a 12 to 20 oz bottle is always more expensive than 1 liter. So, I pretty much stick to 1 liters as they are a relatively convenient way to drinks soda and quite cost effective.
Cola flavored eLiquid was my favorite for my first couple years of vaping, but now it's just one that I like to get every other order and not an ADV.