Perrier with a few fresh raspberries or pitted cherries is good...there is a soda called "waist-watchers made with splenda, very good in the grapefruit...no fakey taste.
i like cranberry or pom juice with seltzer and a twist....and I love V-8 with 2 olives and a stalk of celery, dash of worshteshire, black cracked pepper...(the snack is in the drink).