Diet sodas -Do you think they are unhealthy? Have a favorite?

I have finally gotten on the plain water bandwagon. The plain flavor of water never satisfied me. I drink 4 bottles a day. But I adore diet sodas as well. Diet Dew is the only caffeine I do to perk me up and get me going. Fresca is still amazing. Diet Cherry 7 up.

is tea good for you? I dont do sugar…I’m diabetic. I love flavor.
I do some crystal lite. I love carbonation. Am I okay? What do you do?