Root beer* :soldier:
I'm so over cola. I had been a die-hard Coke man all my life, switching to Diet Coke whenever it was it came out over here and I got to be a regular addict (not quite as much as my wife was, but between us we'd go through 8-12 litres of Diet Coke a week, nearly continuously for a few years). I started to cut back in '99 and was very happy to discover that was a good idea when I found out about the toxicity worries concerning aspartame.
These days my tastes have changed anyway and I recently realised I don't enjoy Diet Coke any more and now like Coke Zero, which is pretty close to being a clone of Pepsi Max. So I'd probably have to go with being a Pepsi guy now which will please my sister no end as she works for them!
*A&W or Mug probably top of my list; although Jones is good it's a bit pricey.
Einion