I like La Croix carbonated flavored water. Lots of flavors to choose from. Klarbrun is the same, like it too. Just water and natural flavors, no calories or sweeteners. I am used to zero sugar drinks. I know a few people who hate these flavored waters because the are just fizzy water and natural flavor.
I tried other carbonated waters, because frankly Perrier is a bit on the expensive side, but they just didn’t do it for me.
But once I made the mistake of trying the Perrier Lime, ugggh, made me want to throw up.