I would suggest staying away from diet soda. I think that the chemicals that they sweeten it with are worse for you than the sugar in regular pop. I also remember reading something about the sweetness of diet pop just gives you cravings for more sweets. What I do is I drink water with about 10% real fruit juice. It tastes fine to me. When I feel really wild I drink soda water, which is carbonated water with no sugar, and 10% juice.

I am trying to lose 30bs as well.

good luck