Seltzer.
Just remembered: Diet Dr. Brown’s Cream Soda, but Jones Cream Soda Zilch might pass that if I can find any.
When I could still have sugar: Snapple Root Beer, Snapple Cream Soada, Stewart’s Orange Cream Soda, and anything from Hansen’s.
I switch off Coke Zero and Diet DP. I also love Arizona diet peach iced tea, the kind with sucralose. I’ll drink Crystal Light diet peach tea but it’s not as good.
Other than water these are all I drink.
Diet Pepsi is my drink of choice, but I love a Dr. Pepper now and then and the diet version doesn’t really cut it.
I also put “other” because Mountain Dew (prefereably diet) is an occasional weakness. This is the only drink known to cause me to lose sleep due to the high caffeine content (and I drink a LOT of coffee).
Me neither. But Bacardi will do just fine as the “little of something”. 
Unsweetened iced tea is my main drink, but if the place has fresh squeezed lemonade (the Minute Maid ones always taste too harsh and overly sweet), I always make it an Arnold Palmer.
[Judge Smails]
How about a Fresca?
[/Judge Smails]
Add another for Mountain Dew although I only drink one a month it is a gift from the gods. Mainly I’m stuck drinking diet sodas and since the selection is limited at my office I drink a lot of diet Pepsi. I loved diet Orange Crush and diet Mountain Dew when I had a larger selection.
On the rare occasion that I can find out I really enjoy a Grape Fanta.
ETA: I also only drink Ginger ale when I fly or am sick, I like the taste but it a drink for settling stomachs for me.