Yup - avoid that one! Daquari mix has lots of sugar in it!
Here are some good options, though:
Diet soda and your choice of liquor (rum, Jack, Jim, tequila, vodka, etc.)
Flavored vodka w/soda water (Raspberry stoli w/soda water & a twist of lime is a personal favorite)
A normal martini (vodka w/vermouth)
Scotch and soda water
I can keep going if you like....